23217972 has 36 divisors (see below), whose sum is σ = 55577088. Its totient is φ = 7544000.

The previous prime is 23217967. The next prime is 23217973. The reversal of 23217972 is 27971232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217973) by changing a digit.

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, 19597 + ... + 20747.

It is an arithmetic number, because the mean of its divisors is an integer number (1543808).

Almost surely, 2^23217972 is an apocalyptic number.

It is an amenable number.

23217972 is an abundant number, since it is smaller than the sum of its proper divisors (32359116).

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

23217972 is a wasteful number, since it uses less digits than its factorization.

23217972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1197 counting only the distinct ones).

The product of its digits is 10584, while the sum is 33.

The square root of 23217972 is about 4818.5030870593. The cubic root of 23217972 is about 285.2822565332.

The spelling of 23217972 in words is "twenty-three million, two hundred seventeen thousand, nine hundred seventy-two".