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252028 = 2279001

252028 has 12 divisors (see below), whose sum is σ = 504112. Its totient is φ = 108000.

The previous prime is 252017. The next prime is 252029. The reversal of 252028 is 820252.

252028 is an admirable number.

It is a super-2 number, since 2×2520282 = 127036225568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 251996 and 252014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4473 + ... + 4528.

2252028 is an apocalyptic number.

252028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

252028 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.

252028 is a wasteful number, since it uses less digits than its factorization.

252028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012 (or 9010 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 252028 is about 502.0239038134. The cubic root of 252028 is about 63.1659352824.

The spelling of 252028 in words is "two hundred fifty-two thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 9001 18002 36004 63007 126014 252028