23187572 has 6 divisors (see below), whose sum is σ = 40578258. Its totient is φ = 11593784.

The previous prime is 23187569. The next prime is 23187587. The reversal of 23187572 is 27578132.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 6180196 = 4124^2 + 2486^2 .

It is a super-3 number, since 3×23187572³ (a number of 23 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 2898443 + ... + 2898450.

It is an arithmetic number, because the mean of its divisors is an integer number (6763043).

Almost surely, 2^23187572 is an apocalyptic number.

It is an amenable number.

23187572 is a deficient number, since it is larger than the sum of its proper divisors (17390686).

23187572 is a wasteful number, since it uses less digits than its factorization.

23187572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5796897 (or 5796895 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 23187572 is about 4815.3475471662. The cubic root of 23187572 is about 285.1576925612.

The spelling of 23187572 in words is "twenty-three million, one hundred eighty-seven thousand, five hundred seventy-two".