23553972 has 36 divisors (see below), whose sum is σ = 64120420. Its totient is φ = 7247232.

The previous prime is 23553953. The next prime is 23553973. The reversal of 23553972 is 27935532.

It can be written as a sum of positive squares in 2 ways, for example, as 1313316 + 22240656 = 1146^2 + 4716^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23553973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24697 + ... + 25632.

Almost surely, 2^23553972 is an apocalyptic number.

It is an amenable number.

23553972 is an abundant number, since it is smaller than the sum of its proper divisors (40566448).

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

23553972 is a wasteful number, since it uses less digits than its factorization.

23553972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50352 (or 50347 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 23553972 is about 4853.2434515487. The cubic root of 23553972 is about 286.6518296509.

The spelling of 23553972 in words is "twenty-three million, five hundred fifty-three thousand, nine hundred seventy-two".