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80872960 = 29574513
BaseRepresentation
bin1001101001000…
…00011000000000
312122011202211211
410310200120000
5131200413320
612005215504
72001260140
oct464403000
9178152754
1080872960
1141718063
1223101594
13139a782c
14aa52920
15717755a
hex4d20600

80872960 has 80 divisors (see below), whose sum is σ = 221655456. Its totient is φ = 27721728.

The previous prime is 80872943. The next prime is 80872973. The reversal of 80872960 is 6927808.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15664 + ... + 20176.

Almost surely, 280872960 is an apocalyptic number.

80872960 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 80872960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110827728).

80872960 is an abundant number, since it is smaller than the sum of its proper divisors (140782496).

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

80872960 is an equidigital number, since it uses as much as digits as its factorization.

80872960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543 (or 4527 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 80872960 is about 8992.9394527040. The cubic root of 80872960 is about 432.4485510208.

The spelling of 80872960 in words is "eighty million, eight hundred seventy-two thousand, nine hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 512 560 640 896 1120 1280 1792 2240 2560 3584 4480 4513 8960 9026 17920 18052 22565 31591 36104 45130 63182 72208 90260 126364 144416 157955 180520 252728 288832 315910 361040 505456 577664 631820 722080 1010912 1155328 1263640 1444160 2021824 2310656 2527280 2888320 4043648 5054560 5776640 8087296 10109120 11553280 16174592 20218240 40436480 80872960