23245639 has 4 divisors (see below), whose sum is σ = 23401800. Its totient is φ = 23089480.

The previous prime is 23245631. The next prime is 23245661. The reversal of 23245639 is 93654232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23245639 - 2³ = 23245631 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 (23245631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77857 + ... + 78154.

It is an arithmetic number, because the mean of its divisors is an integer number (5850450).

Almost surely, 2^23245639 is an apocalyptic number.

23245639 is a deficient number, since it is larger than the sum of its proper divisors (156161).

23245639 is a wasteful number, since it uses less digits than its factorization.

23245639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156160.

The product of its digits is 38880, while the sum is 34.

The square root of 23245639 is about 4821.3731446550. The cubic root of 23245639 is about 285.3955275681.

The spelling of 23245639 in words is "twenty-three million, two hundred forty-five thousand, six hundred thirty-nine".