Search a number
-
+
28076800 = 285241107
BaseRepresentation
bin110101100011…
…0101100000000
31221211110010111
41223012230000
524141424200
62441441104
7460435363
oct153065400
957743114
1028076800
1114937574
1294a0194
135a807bb
143a2c0da
1526e90ba
hex1ac6b00

28076800 has 108 divisors (see below), whose sum is σ = 71854776. Its totient is φ = 10854400.

The previous prime is 28076791. The next prime is 28076801. The reversal of 28076800 is 867082.

It is not an unprimeable number, because it can be changed into a prime (28076801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262347 + ... + 262453.

It is an arithmetic number, because the mean of its divisors is an integer number (665322).

Almost surely, 228076800 is an apocalyptic number.

28076800 is a gapful number since it is divisible by the number (20) 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 28076800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35927388).

28076800 is an abundant number, since it is smaller than the sum of its proper divisors (43777976).

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

28076800 is a wasteful number, since it uses less digits than its factorization.

28076800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28076800 is about 5298.7545706515. The cubic root of 28076800 is about 303.9362747313.

The spelling of 28076800 in words is "twenty-eight million, seventy-six thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 41 50 64 80 82 100 107 128 160 164 200 205 214 256 320 328 400 410 428 535 640 656 800 820 856 1025 1070 1280 1312 1600 1640 1712 2050 2140 2624 2675 3200 3280 3424 4100 4280 4387 5248 5350 6400 6560 6848 8200 8560 8774 10496 10700 13120 13696 16400 17120 17548 21400 21935 26240 27392 32800 34240 35096 42800 43870 52480 65600 68480 70192 85600 87740 109675 131200 136960 140384 171200 175480 219350 262400 280768 342400 350960 438700 561536 684800 701920 877400 1123072 1403840 1754800 2807680 3509600 5615360 7019200 14038400 28076800