22557040 has 40 divisors (see below), whose sum is σ = 57215088. Its totient is φ = 8202240.

The previous prime is 22557023. The next prime is 22557061. The reversal of 22557040 is 4075522.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 22556996 and 22557014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11937 + ... + 13696.

Almost surely, 2^22557040 is an apocalyptic number.

22557040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22557040 is an abundant number, since it is smaller than the sum of its proper divisors (34658048).

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

22557040 is a wasteful number, since it uses less digits than its factorization.

22557040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25657 (or 25651 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 22557040 is about 4749.4252283829. The cubic root of 22557040 is about 282.5491704424.

The spelling of 22557040 in words is "twenty-two million, five hundred fifty-seven thousand, forty".