23012136 has 48 divisors (see below), whose sum is σ = 71229600. Its totient is φ = 6574752.

The previous prime is 23012117. The next prime is 23012149. The reversal of 23012136 is 63121032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22326 + ... + 23333.

It is an arithmetic number, because the mean of its divisors is an integer number (1483950).

Almost surely, 2^23012136 is an apocalyptic number.

It is an amenable number.

23012136 is an abundant number, since it is smaller than the sum of its proper divisors (48217464).

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

23012136 is a wasteful number, since it uses less digits than its factorization.

23012136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45678 (or 45671 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 23012136 is about 4797.0966219162. The cubic root of 23012136 is about 284.4367082766.

Adding to 23012136 its reverse (63121032), we get a palindrome (86133168).

The spelling of 23012136 in words is "twenty-three million, twelve thousand, one hundred thirty-six".