22915380 has 48 divisors (see below), whose sum is σ = 64370880. Its totient is φ = 6091008.

The previous prime is 22915363. The next prime is 22915381. The reversal of 22915380 is 8351922.

It is a happy number.

It is a super-2 number, since 2×22915380² = 1050229281088800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22915381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36711 + ... + 37329.

It is an arithmetic number, because the mean of its divisors is an integer number (1341060).

Almost surely, 2^22915380 is an apocalyptic number.

22915380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22915380 is an abundant number, since it is smaller than the sum of its proper divisors (41455500).

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

22915380 is a wasteful number, since it uses less digits than its factorization.

22915380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 22915380 is about 4787.0011489449. The cubic root of 22915380 is about 284.0375041392.

The spelling of 22915380 in words is "twenty-two million, nine hundred fifteen thousand, three hundred eighty".