23239978 has 8 divisors (see below), whose sum is σ = 34961472. Its totient is φ = 11586156.

The previous prime is 23239973. The next prime is 23239981. The reversal of 23239978 is 87993232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (23239973) 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, 16050 + ... + 17437.

It is an arithmetic number, because the mean of its divisors is an integer number (4370184).

Almost surely, 2^23239978 is an apocalyptic number.

23239978 is a deficient number, since it is larger than the sum of its proper divisors (11721494).

23239978 is a wasteful number, since it uses less digits than its factorization.

23239978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33836.

The product of its digits is 163296, while the sum is 43.

The square root of 23239978 is about 4820.7860354926. The cubic root of 23239978 is about 285.3723582724.

The spelling of 23239978 in words is "twenty-three million, two hundred thirty-nine thousand, nine hundred seventy-eight".