23661972 has 36 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 7791312.

The previous prime is 23661947. The next prime is 23661983. The reversal of 23661972 is 27916632.

23661972 is a `hidden beast` number, since 2 + 36 + 619 + 7 + 2 = 666.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (1681680).

Almost surely, 2^23661972 is an apocalyptic number.

It is an amenable number.

23661972 is an abundant number, since it is smaller than the sum of its proper divisors (36878508).

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

23661972 is a wasteful number, since it uses less digits than its factorization.

23661972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8012 (or 8007 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 23661972 is about 4864.3573059552. The cubic root of 23661972 is about 287.0892817122.

The spelling of 23661972 in words is "twenty-three million, six hundred sixty-one thousand, nine hundred seventy-two".