23720039 has 8 divisors (see below), whose sum is σ = 27316608. Its totient is φ = 20175480.

The previous prime is 23720027. The next prime is 23720063. The reversal of 23720039 is 93002732.

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

It is a cyclic number.

It is not a de Polignac number, because 23720039 - 2⁴ = 23720023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23720069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12017 + ... + 13850.

It is an arithmetic number, because the mean of its divisors is an integer number (3414576).

Almost surely, 2^23720039 is an apocalyptic number.

23720039 is a deficient number, since it is larger than the sum of its proper divisors (3596569).

23720039 is a wasteful number, since it uses less digits than its factorization.

23720039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26005.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 23720039 is about 4870.3222685978. The cubic root of 23720039 is about 287.3239310103.

The spelling of 23720039 in words is "twenty-three million, seven hundred twenty thousand, thirty-nine".