23938478 has 4 divisors (see below), whose sum is σ = 35907720. Its totient is φ = 11969238.

The previous prime is 23938477. The next prime is 23938493. The reversal of 23938478 is 87483932.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23938477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984618 + ... + 5984621.

It is an arithmetic number, because the mean of its divisors is an integer number (8976930).

Almost surely, 2^23938478 is an apocalyptic number.

23938478 is a deficient number, since it is larger than the sum of its proper divisors (11969242).

23938478 is a wasteful number, since it uses less digits than its factorization.

23938478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11969241.

The product of its digits is 290304, while the sum is 44.

The square root of 23938478 is about 4892.6963936055. The cubic root of 23938478 is about 288.2032307181.

The spelling of 23938478 in words is "twenty-three million, nine hundred thirty-eight thousand, four hundred seventy-eight".