252618428 has 6 divisors (see below), whose sum is σ = 442082256. Its totient is φ = 126309212.

The previous prime is 252618427. The next prime is 252618437. The reversal of 252618428 is 824816252.

It is a junction number, because it is equal to n+sod(n) for n = 252618391 and 252618400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252618427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31577300 + ... + 31577307.

It is an arithmetic number, because the mean of its divisors is an integer number (73680376).

Almost surely, 2^252618428 is an apocalyptic number.

It is an amenable number.

252618428 is a deficient number, since it is larger than the sum of its proper divisors (189463828).

252618428 is a wasteful number, since it uses less digits than its factorization.

252618428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63154611 (or 63154609 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 252618428 is about 15893.9745815828. The cubic root of 252618428 is about 632.1522325959.

The spelling of 252618428 in words is "two hundred fifty-two million, six hundred eighteen thousand, four hundred twenty-eight".