23986978 has 8 divisors (see below), whose sum is σ = 36016668. Its totient is φ = 11981424.

The previous prime is 23986951. The next prime is 23986979. The reversal of 23986978 is 87968932.

It can be written as a sum of positive squares in 2 ways, for example, as 20948929 + 3038049 = 4577^2 + 1743^2 .

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

It is a super-2 number, since 2×23986978² = 1150750227144968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23986979) 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, 3301 + ... + 7672.

Almost surely, 2^23986978 is an apocalyptic number.

23986978 is a deficient number, since it is larger than the sum of its proper divisors (12029690).

23986978 is a wasteful number, since it uses less digits than its factorization.

23986978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12068.

The product of its digits is 1306368, while the sum is 52.

The square root of 23986978 is about 4897.6502529274. The cubic root of 23986978 is about 288.3977352513.

It can be divided in two parts, 23986 and 978, that added together give a square (24964 = 158²).

The spelling of 23986978 in words is "twenty-three million, nine hundred eighty-six thousand, nine hundred seventy-eight".