423251624 has 8 divisors (see below), whose sum is σ = 793596810. Its totient is φ = 211625808.

The previous prime is 423251597. The next prime is 423251639. The reversal of 423251624 is 426152324.

It can be written as a sum of positive squares in only one way, i.e., 279491524 + 143760100 = 16718^2 + 11990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26453219 + ... + 26453234.

Almost surely, 2^423251624 is an apocalyptic number.

It is an amenable number.

423251624 is a deficient number, since it is larger than the sum of its proper divisors (370345186).

423251624 is a wasteful number, since it uses less digits than its factorization.

423251624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52906459 (or 52906455 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 423251624 is about 20573.0800805324. The cubic root of 423251624 is about 750.8148914670.

The spelling of 423251624 in words is "four hundred twenty-three million, two hundred fifty-one thousand, six hundred twenty-four".