23612638 has 32 divisors (see below), whose sum is σ = 42835968. Its totient is φ = 9547200.

The previous prime is 23612621. The next prime is 23612639. The reversal of 23612638 is 83621632.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23612639) 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 15 ways as a sum of consecutive naturals, for example, 17131 + ... + 18457.

It is an arithmetic number, because the mean of its divisors is an integer number (1338624).

Almost surely, 2^23612638 is an apocalyptic number.

23612638 is a deficient number, since it is larger than the sum of its proper divisors (19223330).

23612638 is a wasteful number, since it uses less digits than its factorization.

23612638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its digits is 10368, while the sum is 31.

The square root of 23612638 is about 4859.2836920682. The cubic root of 23612638 is about 286.8896207363.

The spelling of 23612638 in words is "twenty-three million, six hundred twelve thousand, six hundred thirty-eight".