252438428 has 18 divisors (see below), whose sum is σ = 485579808. Its totient is φ = 114744520.

The previous prime is 252438413. The next prime is 252438449. The reversal of 252438428 is 824834252.

252438428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×252438428⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 252438391 and 252438400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260300 + ... + 261267.

It is an arithmetic number, because the mean of its divisors is an integer number (26976656).

Almost surely, 2^252438428 is an apocalyptic number.

It is an amenable number.

252438428 is a deficient number, since it is larger than the sum of its proper divisors (233141380).

252438428 is a wasteful number, since it uses less digits than its factorization.

252438428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521593 (or 521580 counting only the distinct ones).

The product of its digits is 122880, while the sum is 38.

The square root of 252438428 is about 15888.3110493218. The cubic root of 252438428 is about 632.0020529496.

The spelling of 252438428 in words is "two hundred fifty-two million, four hundred thirty-eight thousand, four hundred twenty-eight".