23012040 has 64 divisors (see below), whose sum is σ = 72676800. Its totient is φ = 5812992.

The previous prime is 23011997. The next prime is 23012047. The reversal of 23012040 is 4021032.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (23012047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2767 + ... + 7326.

It is an arithmetic number, because the mean of its divisors is an integer number (1135575).

Almost surely, 2^23012040 is an apocalyptic number.

23012040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012040 is an abundant number, since it is smaller than the sum of its proper divisors (49664760).

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

23012040 is a wasteful number, since it uses less digits than its factorization.

23012040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10126 (or 10122 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 23012040 is about 4797.0866158534. The cubic root of 23012040 is about 284.4363127468.

Adding to 23012040 its reverse (4021032), we get a palindrome (27033072).

The spelling of 23012040 in words is "twenty-three million, twelve thousand, forty".