252910728 has 64 divisors (see below), whose sum is σ = 802896000. Its totient is φ = 72259776.

The previous prime is 252910727. The next prime is 252910747. The reversal of 252910728 is 827019252.

252910728 is a `hidden beast` number, since 2 + 529 + 107 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 252910692 and 252910701.

It is not an unprimeable number, because it can be changed into a prime (252910727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82123 + ... + 85146.

It is an arithmetic number, because the mean of its divisors is an integer number (12545250).

Almost surely, 2^252910728 is an apocalyptic number.

252910728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

252910728 is an abundant number, since it is smaller than the sum of its proper divisors (549985272).

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

252910728 is a wasteful number, since it uses less digits than its factorization.

252910728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167291 (or 167281 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 252910728 is about 15903.1672317183. The cubic root of 252910728 is about 632.3959557440.

The spelling of 252910728 in words is "two hundred fifty-two million, nine hundred ten thousand, seven hundred twenty-eight".