247990992 has 40 divisors (see below), whose sum is σ = 644500416. Its totient is φ = 82166016.

The previous prime is 247990949. The next prime is 247990997. The reversal of 247990992 is 299099742.

It is a happy number.

It is a super-2 number, since 2×247990992² = 122999064226288128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247990997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7453 + ... + 23484.

Almost surely, 2^247990992 is an apocalyptic number.

It is an amenable number.

247990992 is an abundant number, since it is smaller than the sum of its proper divisors (396509424).

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

247990992 is a wasteful number, since it uses less digits than its factorization.

247990992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31115 (or 31109 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 247990992 is about 15747.7297411405. The cubic root of 247990992 is about 628.2685235160.

The spelling of 247990992 in words is "two hundred forty-seven million, nine hundred ninety thousand, nine hundred ninety-two".