17978952 has 32 divisors (see below), whose sum is σ = 45712800. Its totient is φ = 5890944.

The previous prime is 17978941. The next prime is 17978971. The reversal of 17978952 is 25987971.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4933 + ... + 7764.

It is an arithmetic number, because the mean of its divisors is an integer number (1428525).

Almost surely, 2^17978952 is an apocalyptic number.

17978952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17978952 is an abundant number, since it is smaller than the sum of its proper divisors (27733848).

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

17978952 is a wasteful number, since it uses less digits than its factorization.

17978952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12765 (or 12761 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 17978952 is about 4240.1594309648. The cubic root of 17978952 is about 261.9719489033.

The spelling of 17978952 in words is "seventeen million, nine hundred seventy-eight thousand, nine hundred fifty-two".