Search a number
-
+
285368072 = 23116415059
BaseRepresentation
bin10001000000100…
…101111100001000
3201212222012101212
4101000211330020
51041023234242
644152232252
710033405613
oct2100457410
9655865355
10285368072
111370a0290
127b69b688
1347176b62
1429c8517a
151a0bd782
hex11025f08

285368072 has 32 divisors (see below), whose sum is σ = 584733600. Its totient is φ = 129484800.

The previous prime is 285368071. The next prime is 285368089. The reversal of 285368072 is 270863582.

It is not an unprimeable number, because it can be changed into a prime (285368071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53879 + ... + 58937.

It is an arithmetic number, because the mean of its divisors is an integer number (18272925).

Almost surely, 2285368072 is an apocalyptic number.

285368072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

285368072 is an abundant number, since it is smaller than the sum of its proper divisors (299365528).

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

285368072 is a wasteful number, since it uses less digits than its factorization.

285368072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717 (or 5713 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 285368072 is about 16892.8408504905. The cubic root of 285368072 is about 658.3676157689.

The spelling of 285368072 in words is "two hundred eighty-five million, three hundred sixty-eight thousand, seventy-two".

Divisors: 1 2 4 8 11 22 44 88 641 1282 2564 5059 5128 7051 10118 14102 20236 28204 40472 55649 56408 111298 222596 445192 3242819 6485638 12971276 25942552 35671009 71342018 142684036 285368072