23720427 has 12 divisors (see below), whose sum is σ = 35099064. Its totient is φ = 15427680.

The previous prime is 23720407. The next prime is 23720443. The reversal of 23720427 is 72402732.

23720427 is a `hidden beast` number, since 237 + 2 + 0 + 427 = 666.

It is not a de Polignac number, because 23720427 - 2⁷ = 23720299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23720427.

It is not an unprimeable number, because it can be changed into a prime (23720407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31773 + ... + 32510.

It is an arithmetic number, because the mean of its divisors is an integer number (2924922).

Almost surely, 2^23720427 is an apocalyptic number.

23720427 is a deficient number, since it is larger than the sum of its proper divisors (11378637).

23720427 is a wasteful number, since it uses less digits than its factorization.

23720427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64330 (or 64327 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 23720427 is about 4870.3621015280. The cubic root of 23720427 is about 287.3254976333.

The spelling of 23720427 in words is "twenty-three million, seven hundred twenty thousand, four hundred twenty-seven".