23247639 has 12 divisors (see below), whose sum is σ = 33633600. Its totient is φ = 15473664.

The previous prime is 23247607. The next prime is 23247643. The reversal of 23247639 is 93674232.

It is a happy number.

It is not a de Polignac number, because 23247639 - 2⁵ = 23247607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23247689) 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, 5242 + ... + 8600.

It is an arithmetic number, because the mean of its divisors is an integer number (2802800).

Almost surely, 2^23247639 is an apocalyptic number.

23247639 is a deficient number, since it is larger than the sum of its proper divisors (10385961).

23247639 is a wasteful number, since it uses less digits than its factorization.

23247639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134 (or 4131 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 23247639 is about 4821.5805499857. The cubic root of 23247639 is about 285.4037122530.

The spelling of 23247639 in words is "twenty-three million, two hundred forty-seven thousand, six hundred thirty-nine".