23744021940 has 96 divisors (see below), whose sum is σ = 77082082560. Its totient is φ = 6056443008.

The previous prime is 23744021923. The next prime is 23744021971. The reversal of 23744021940 is 4912044732.

23744021940 is a `hidden beast` number, since 23 + 7 + 440 + 2 + 194 + 0 = 666.

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 = 23744021895 and 23744021904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 943459 + ... + 968298.

It is an arithmetic number, because the mean of its divisors is an integer number (802938360).

Almost surely, 2^23744021940 is an apocalyptic number.

23744021940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23744021940 is an abundant number, since it is smaller than the sum of its proper divisors (53338060620).

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

23744021940 is a wasteful number, since it uses less digits than its factorization.

23744021940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911798 (or 1911790 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 23744021940 in words is "twenty-three billion, seven hundred forty-four million, twenty-one thousand, nine hundred forty".