252851228 has 12 divisors (see below), whose sum is σ = 505702512. Its totient is φ = 108364800.

The previous prime is 252851219. The next prime is 252851257. The reversal of 252851228 is 822158252.

252851228 is an admirable number.

It is a super-2 number, since 2×252851228² = 127867487002215968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4515173 + ... + 4515228.

It is an arithmetic number, because the mean of its divisors is an integer number (42141876).

Almost surely, 2^252851228 is an apocalyptic number.

252851228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

252851228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

252851228 is a wasteful number, since it uses less digits than its factorization.

252851228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9030412 (or 9030410 counting only the distinct ones).

The product of its digits is 25600, while the sum is 35.

The square root of 252851228 is about 15901.2964251347. The cubic root of 252851228 is about 632.3463591784.

The spelling of 252851228 in words is "two hundred fifty-two million, eight hundred fifty-one thousand, two hundred twenty-eight".