22358140 has 24 divisors (see below), whose sum is σ = 53659872. Its totient is φ = 7665600.

The previous prime is 22358137. The next prime is 22358143. The reversal of 22358140 is 4185322.

It is an interprime number because it is at equal distance from previous prime (22358137) and next prime (22358143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22358143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79711 + ... + 79990.

It is an arithmetic number, because the mean of its divisors is an integer number (2235828).

Almost surely, 2^22358140 is an apocalyptic number.

22358140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22358140 is an abundant number, since it is smaller than the sum of its proper divisors (31301732).

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

22358140 is a wasteful number, since it uses less digits than its factorization.

22358140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159717 (or 159715 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22358140 is about 4728.4394888800. The cubic root of 22358140 is about 281.7162445943.

The spelling of 22358140 in words is "twenty-two million, three hundred fifty-eight thousand, one hundred forty".