23572740 has 24 divisors (see below), whose sum is σ = 66003840. Its totient is φ = 6286048.

The previous prime is 23572733. The next prime is 23572753. The reversal of 23572740 is 4727532.

It is a super-2 number, since 2×23572740² = 1111348142215200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23572698 and 23572707.

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 7 ways as a sum of consecutive naturals, for example, 196380 + ... + 196499.

It is an arithmetic number, because the mean of its divisors is an integer number (2750160).

Almost surely, 2^23572740 is an apocalyptic number.

23572740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23572740 is an abundant number, since it is smaller than the sum of its proper divisors (42431100).

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

23572740 is a wasteful number, since it uses less digits than its factorization.

23572740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392891 (or 392889 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 23572740 is about 4855.1766188265. The cubic root of 23572740 is about 286.7279449555.

The spelling of 23572740 in words is "twenty-three million, five hundred seventy-two thousand, seven hundred forty".