247011992 has 8 divisors (see below), whose sum is σ = 463147500. Its totient is φ = 123505992.

The previous prime is 247011983. The next prime is 247012001. The reversal of 247011992 is 299110742.

247011992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (247011983) and next prime (247012001).

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

It is a super-2 number, since 2×247011992² = 122029848383616128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15438242 + ... + 15438257.

Almost surely, 2^247011992 is an apocalyptic number.

It is an amenable number.

247011992 is a deficient number, since it is larger than the sum of its proper divisors (216135508).

247011992 is a wasteful number, since it uses less digits than its factorization.

247011992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30876505 (or 30876501 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 247011992 is about 15716.6151572150. The cubic root of 247011992 is about 627.4406896213.

The spelling of 247011992 in words is "two hundred forty-seven million, eleven thousand, nine hundred ninety-two".