17947968 has 28 divisors (see below), whose sum is σ = 47487840. Its totient is φ = 5982592.

The previous prime is 17947961. The next prime is 17947987. The reversal of 17947968 is 86974971.

It is a self number, because there is not a number n which added to its sum of digits gives 17947968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17947961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46548 + ... + 46931.

Almost surely, 2^17947968 is an apocalyptic number.

It is an amenable number.

17947968 is an abundant number, since it is smaller than the sum of its proper divisors (29539872).

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

17947968 is an equidigital number, since it uses as much as digits as its factorization.

17947968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93494 (or 93484 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 17947968 is about 4236.5042192827. The cubic root of 17947968 is about 261.8213727164.

It can be divided in two parts, 17947 and 968, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 17947968 in words is "seventeen million, nine hundred forty-seven thousand, nine hundred sixty-eight".