22078860 has 48 divisors (see below), whose sum is σ = 63957600. Its totient is φ = 5684224.

The previous prime is 22078843. The next prime is 22078867. The reversal of 22078860 is 6887022.

It is not an unprimeable number, because it can be changed into a prime (22078867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4605 + ... + 8084.

It is an arithmetic number, because the mean of its divisors is an integer number (1332450).

Almost surely, 2^22078860 is an apocalyptic number.

22078860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22078860 is an abundant number, since it is smaller than the sum of its proper divisors (41878740).

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

22078860 is a wasteful number, since it uses less digits than its factorization.

22078860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730 (or 12728 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 22078860 is about 4698.8147441669. The cubic root of 22078860 is about 280.5383350684.

The spelling of 22078860 in words is "twenty-two million, seventy-eight thousand, eight hundred sixty".