22540860 has 72 divisors (see below), whose sum is σ = 69132336. Its totient is φ = 5944320.

The previous prime is 22540853. The next prime is 22540883. The reversal of 22540860 is 6804522.

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, 16815 + ... + 18105.

Almost surely, 2^22540860 is an apocalyptic number.

22540860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22540860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34566168).

22540860 is an abundant number, since it is smaller than the sum of its proper divisors (46591476).

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

22540860 is a wasteful number, since it uses less digits than its factorization.

22540860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22540860 is about 4747.7215588111. The cubic root of 22540860 is about 282.4815974647.

The spelling of 22540860 in words is "twenty-two million, five hundred forty thousand, eight hundred sixty".