23898978 has 24 divisors (see below), whose sum is σ = 54033408. Its totient is φ = 7619832.

The previous prime is 23898943. The next prime is 23899009. The reversal of 23898978 is 87989832.

It is a super-2 number, since 2×23898978² = 1142322298888968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28450 + ... + 29277.

It is an arithmetic number, because the mean of its divisors is an integer number (2251392).

Almost surely, 2^23898978 is an apocalyptic number.

23898978 is an abundant number, since it is smaller than the sum of its proper divisors (30134430).

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

23898978 is a wasteful number, since it uses less digits than its factorization.

23898978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57758 (or 57755 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 23898978 is about 4888.6580980879. The cubic root of 23898978 is about 288.0446256081.

The spelling of 23898978 in words is "twenty-three million, eight hundred ninety-eight thousand, nine hundred seventy-eight".