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285324032 = 287891789
BaseRepresentation
bin10001000000011…
…011001100000000
3201212212221222202
4101000123030000
51041020332112
644151252332
710033133330
oct2100331400
9655787882
10285324032
11137070194
127b67a0a8
134715cab6
1429c730c0
151a0b06c2
hex1101b300

285324032 has 72 divisors (see below), whose sum is σ = 658576800. Its totient is φ = 120840192.

The previous prime is 285324029. The next prime is 285324089. The reversal of 285324032 is 230423582.

It is a junction number, because it is equal to n+sod(n) for n = 285323986 and 285324004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158594 + ... + 160382.

It is an arithmetic number, because the mean of its divisors is an integer number (9146900).

Almost surely, 2285324032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285324032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329288400).

285324032 is an abundant number, since it is smaller than the sum of its proper divisors (373252768).

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

285324032 is an equidigital number, since it uses as much as digits as its factorization.

285324032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 285324032 is about 16891.5372894240. The cubic root of 285324032 is about 658.3337460590. Note that the first 3 decimals are identical.

The spelling of 285324032 in words is "two hundred eighty-five million, three hundred twenty-four thousand, thirty-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 89 112 128 178 224 256 356 448 623 712 896 1246 1424 1789 1792 2492 2848 3578 4984 5696 7156 9968 11392 12523 14312 19936 22784 25046 28624 39872 50092 57248 79744 100184 114496 159221 159488 200368 228992 318442 400736 457984 636884 801472 1114547 1273768 1602944 2229094 2547536 3205888 4458188 5095072 8916376 10190144 17832752 20380288 35665504 40760576 71331008 142662016 285324032