243904924 has 12 divisors (see below), whose sum is σ = 433204744. Its totient is φ = 120132144.

The previous prime is 243904907. The next prime is 243904943. The reversal of 243904924 is 429409342.

243904924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243904924² = 118979223902891552, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454779 + ... + 455314.

Almost surely, 2^243904924 is an apocalyptic number.

It is an amenable number.

243904924 is a deficient number, since it is larger than the sum of its proper divisors (189299820).

243904924 is a wasteful number, since it uses less digits than its factorization.

243904924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910164 (or 910162 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 243904924 is about 15617.4557466957. The cubic root of 243904924 is about 624.7988037190.

The spelling of 243904924 in words is "two hundred forty-three million, nine hundred four thousand, nine hundred twenty-four".