247316990 has 16 divisors (see below), whose sum is σ = 445404960. Its totient is φ = 98874720.

The previous prime is 247316989. The next prime is 247317013. The reversal of 247316990 is 99613742.

It is a super-2 number, since 2×247316990² = 122331387085320200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17735 + ... + 28445.

It is an arithmetic number, because the mean of its divisors is an integer number (27837810).

Almost surely, 2^247316990 is an apocalyptic number.

247316990 is a deficient number, since it is larger than the sum of its proper divisors (198087970).

247316990 is a wasteful number, since it uses less digits than its factorization.

247316990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 247316990 is about 15726.3152073205. The cubic root of 247316990 is about 627.6988274874.

The spelling of 247316990 in words is "two hundred forty-seven million, three hundred sixteen thousand, nine hundred ninety".