23139633 has 32 divisors (see below), whose sum is σ = 35988480. Its totient is φ = 13083840.

The previous prime is 23139629. The next prime is 23139647. The reversal of 23139633 is 33693132.

It is not a de Polignac number, because 23139633 - 2² = 23139629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23139633.

It is not an unprimeable number, because it can be changed into a prime (23139673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32283 + ... + 32991.

It is an arithmetic number, because the mean of its divisors is an integer number (1124640).

Almost surely, 2^23139633 is an apocalyptic number.

23139633 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23139633 is a deficient number, since it is larger than the sum of its proper divisors (12848847).

23139633 is a wasteful number, since it uses less digits than its factorization.

23139633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789.

The product of its digits is 8748, while the sum is 30.

The square root of 23139633 is about 4810.3672416979. The cubic root of 23139633 is about 284.9610411505.

It can be divided in two parts, 23 and 139633, that added together give a triangular number (139656 = T₅₂₈).

The spelling of 23139633 in words is "twenty-three million, one hundred thirty-nine thousand, six hundred thirty-three".