23389478 has 16 divisors (see below), whose sum is σ = 40310784. Its totient is φ = 9970440.

The previous prime is 23389417. The next prime is 23389507. The reversal of 23389478 is 87498332.

It is a super-2 number, since 2×23389478² = 1094135362224968, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1700 + ... + 7047.

It is an arithmetic number, because the mean of its divisors is an integer number (2519424).

Almost surely, 2^23389478 is an apocalyptic number.

23389478 is a deficient number, since it is larger than the sum of its proper divisors (16921306).

23389478 is a wasteful number, since it uses less digits than its factorization.

23389478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8947.

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

The square root of 23389478 is about 4836.2669487943. The cubic root of 23389478 is about 285.9829728889.

The spelling of 23389478 in words is "twenty-three million, three hundred eighty-nine thousand, four hundred seventy-eight".