23281572 has 12 divisors (see below), whose sum is σ = 54323696. Its totient is φ = 7760520.

The previous prime is 23281571. The next prime is 23281579. The reversal of 23281572 is 27518232.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (23281571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970054 + ... + 970077.

Almost surely, 2^23281572 is an apocalyptic number.

It is an amenable number.

23281572 is an abundant number, since it is smaller than the sum of its proper divisors (31042124).

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

23281572 is a wasteful number, since it uses less digits than its factorization.

23281572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940138 (or 1940136 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 23281572 is about 4825.0981337171. The cubic root of 23281572 is about 285.5425062182.

The spelling of 23281572 in words is "twenty-three million, two hundred eighty-one thousand, five hundred seventy-two".