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80288000 = 285313193
BaseRepresentation
bin1001100100100…
…01100100000000
312121002001102122
410302101210000
5131023204000
611544503412
71663302542
oct462214400
9177061378
1080288000
1141358621
1222a7ab68
13138314c0
14a93d692
1570ae085
hex4c91900

80288000 has 144 divisors (see below), whose sum is σ = 216508656. Its totient is φ = 29491200.

The previous prime is 80287997. The next prime is 80288023. The reversal of 80288000 is 88208.

It can be written as a sum of positive squares in 8 ways, for example, as 52070656 + 28217344 = 7216^2 + 5312^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415904 + ... + 416096.

Almost surely, 280288000 is an apocalyptic number.

80288000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80288000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108254328).

80288000 is an abundant number, since it is smaller than the sum of its proper divisors (136220656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80288000 is a wasteful number, since it uses less digits than its factorization.

80288000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 80288000 is about 8960.3571357396. The cubic root of 80288000 is about 431.4033830928.

It can be divided in two parts, 80 and 288000, that multiplied together give a square (23040000 = 48002).

The spelling of 80288000 in words is "eighty million, two hundred eighty-eight thousand".

Divisors: 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 64 65 80 100 104 125 128 130 160 193 200 208 250 256 260 320 325 386 400 416 500 520 640 650 772 800 832 965 1000 1040 1280 1300 1544 1600 1625 1664 1930 2000 2080 2509 2600 3088 3200 3250 3328 3860 4000 4160 4825 5018 5200 6176 6400 6500 7720 8000 8320 9650 10036 10400 12352 12545 13000 15440 16000 16640 19300 20072 20800 24125 24704 25090 26000 30880 32000 38600 40144 41600 48250 49408 50180 52000 61760 62725 77200 80288 83200 96500 100360 104000 123520 125450 154400 160576 193000 200720 208000 247040 250900 308800 313625 321152 386000 401440 416000 501800 617600 627250 642304 772000 802880 1003600 1235200 1254500 1544000 1605760 2007200 2509000 3088000 3211520 4014400 5018000 6176000 8028800 10036000 16057600 20072000 40144000 80288000