23455638 has 12 divisors (see below), whose sum is σ = 50820588. Its totient is φ = 7818540.

The previous prime is 23455603. The next prime is 23455639. The reversal of 23455638 is 83655432.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23455639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 651528 + ... + 651563.

It is an arithmetic number, because the mean of its divisors is an integer number (4235049).

Almost surely, 2^23455638 is an apocalyptic number.

23455638 is an abundant number, since it is smaller than the sum of its proper divisors (27364950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23455638 is a wasteful number, since it uses less digits than its factorization.

23455638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303099 (or 1303096 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 23455638 is about 4843.1021050562. The cubic root of 23455638 is about 286.2523649875.

The spelling of 23455638 in words is "twenty-three million, four hundred fifty-five thousand, six hundred thirty-eight".