22364140 has 48 divisors (see below), whose sum is σ = 49845600. Its totient is φ = 8404992.

The previous prime is 22364137. The next prime is 22364141. The reversal of 22364140 is 4146322.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22364141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86892 + ... + 87148.

It is an arithmetic number, because the mean of its divisors is an integer number (1038450).

Almost surely, 2^22364140 is an apocalyptic number.

22364140 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 22364140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24922800).

22364140 is an abundant number, since it is smaller than the sum of its proper divisors (27481460).

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

22364140 is a wasteful number, since it uses less digits than its factorization.

22364140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22364140 is about 4729.0739051108. The cubic root of 22364140 is about 281.7414426696.

The spelling of 22364140 in words is "twenty-two million, three hundred sixty-four thousand, one hundred forty".