23002639 has 4 divisors (see below), whose sum is σ = 25093800. Its totient is φ = 20911480.

The previous prime is 23002633. The next prime is 23002643. The reversal of 23002639 is 93620032.

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 23002639 - 2³ = 23002631 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 (23002631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045564 + ... + 1045585.

It is an arithmetic number, because the mean of its divisors is an integer number (6273450).

Almost surely, 2^23002639 is an apocalyptic number.

23002639 is a deficient number, since it is larger than the sum of its proper divisors (2091161).

23002639 is a wasteful number, since it uses less digits than its factorization.

23002639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091160.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 23002639 is about 4796.1066501903. The cubic root of 23002639 is about 284.3975743300.

The spelling of 23002639 in words is "twenty-three million, two thousand, six hundred thirty-nine".