23837940 has 72 divisors (see below), whose sum is σ = 82642560. Its totient is φ = 5448384.

The previous prime is 23837911. The next prime is 23837981. The reversal of 23837940 is 4973832.

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

It is a junction number, because it is equal to n+sod(n) for n = 23837895 and 23837904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8200 + ... + 10719.

Almost surely, 2^23837940 is an apocalyptic number.

23837940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23837940 is an abundant number, since it is smaller than the sum of its proper divisors (58804620).

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

23837940 is a wasteful number, since it uses less digits than its factorization.

23837940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18941 (or 18936 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 23837940 is about 4882.4112895167. The cubic root of 23837940 is about 287.7991945134.

The spelling of 23837940 in words is "twenty-three million, eight hundred thirty-seven thousand, nine hundred forty".