247990432 has 24 divisors (see below), whose sum is σ = 513928800. Its totient is φ = 117468864.

The previous prime is 247990423. The next prime is 247990481. The reversal of 247990432 is 234099742.

It is a super-2 number, since 2×247990432² = 122998508727093248, which contains 22 as substring.

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, 203332 + ... + 204547.

It is an arithmetic number, because the mean of its divisors is an integer number (21413700).

Almost surely, 2^247990432 is an apocalyptic number.

It is an amenable number.

247990432 is an abundant number, since it is smaller than the sum of its proper divisors (265938368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247990432 is a wasteful number, since it uses less digits than its factorization.

247990432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407908 (or 407900 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 247990432 is about 15747.7119607897. The cubic root of 247990432 is about 628.2680506082.

The spelling of 247990432 in words is "two hundred forty-seven million, nine hundred ninety thousand, four hundred thirty-two".