22437040 has 20 divisors (see below), whose sum is σ = 52166304. Its totient is φ = 8974784.

The previous prime is 22437017. The next prime is 22437047. The reversal of 22437040 is 4073422.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (22437047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140152 + ... + 140311.

Almost surely, 2^22437040 is an apocalyptic number.

22437040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22437040 is an abundant number, since it is smaller than the sum of its proper divisors (29729264).

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

22437040 is a wasteful number, since it uses less digits than its factorization.

22437040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280476 (or 280470 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 22437040 is about 4736.7752743824. The cubic root of 22437040 is about 282.0472398771.

The spelling of 22437040 in words is "twenty-two million, four hundred thirty-seven thousand, forty".