247289974 has 16 divisors (see below), whose sum is σ = 393412320. Its totient is φ = 116328960.

The previous prime is 247289953. The next prime is 247289993. The reversal of 247289974 is 479982742.

It is a super-2 number, since 2×247289974² = 122304662481841352, 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41259 + ... + 46870.

It is an arithmetic number, because the mean of its divisors is an integer number (24588270).

Almost surely, 2^247289974 is an apocalyptic number.

247289974 is a deficient number, since it is larger than the sum of its proper divisors (146122346).

247289974 is a wasteful number, since it uses less digits than its factorization.

247289974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88215.

The product of its digits is 2032128, while the sum is 52.

The square root of 247289974 is about 15725.4562413941. The cubic root of 247289974 is about 627.6759708166.

The spelling of 247289974 in words is "two hundred forty-seven million, two hundred eighty-nine thousand, nine hundred seventy-four".