252423428 has 6 divisors (see below), whose sum is σ = 441741006. Its totient is φ = 126211712.

The previous prime is 252423419. The next prime is 252423467. The reversal of 252423428 is 824324252.

It can be written as a sum of positive squares in only one way, i.e., 140232964 + 112190464 = 11842^2 + 10592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252423394 and 252423403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31552925 + ... + 31552932.

It is an arithmetic number, because the mean of its divisors is an integer number (73623501).

Almost surely, 2^252423428 is an apocalyptic number.

It is an amenable number.

252423428 is a deficient number, since it is larger than the sum of its proper divisors (189317578).

252423428 is a wasteful number, since it uses less digits than its factorization.

252423428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63105861 (or 63105859 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

The square root of 252423428 is about 15887.8389971701. The cubic root of 252423428 is about 631.9895347570.

It can be divided in two parts, 2524 and 23428, that added together give a palindrome (25952).

The spelling of 252423428 in words is "two hundred fifty-two million, four hundred twenty-three thousand, four hundred twenty-eight".