22739040 has 72 divisors (see below), whose sum is σ = 77601888. Its totient is φ = 6063360.

The previous prime is 22739033. The next prime is 22739069. The reversal of 22739040 is 4093722.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 22738995 and 22739013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6456 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (1077804).

Almost surely, 2^22739040 is an apocalyptic number.

22739040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22739040 is an abundant number, since it is smaller than the sum of its proper divisors (54862848).

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

22739040 is a wasteful number, since it uses less digits than its factorization.

22739040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15812 (or 15801 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 22739040 is about 4768.5469484949. The cubic root of 22739040 is about 283.3070456195.

The spelling of 22739040 in words is "twenty-two million, seven hundred thirty-nine thousand, forty".