22088780 has 48 divisors (see below), whose sum is σ = 56137536. Its totient is φ = 7127040.

The previous prime is 22088777. The next prime is 22088789. The reversal of 22088780 is 8788022.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 22088780.

It is not an unprimeable number, because it can be changed into a prime (22088789) 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, 2261 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (1169532).

Almost surely, 2^22088780 is an apocalyptic number.

22088780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22088780 is an abundant number, since it is smaller than the sum of its proper divisors (34048756).

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

22088780 is a wasteful number, since it uses less digits than its factorization.

22088780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9314 (or 9312 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 22088780 is about 4699.8702109739. The cubic root of 22088780 is about 280.5803439341.

The spelling of 22088780 in words is "twenty-two million, eighty-eight thousand, seven hundred eighty".