22779980 has 12 divisors (see below), whose sum is σ = 47838000. Its totient is φ = 9111984.

The previous prime is 22779973. The next prime is 22780001. The reversal of 22779980 is 8997722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569480 + ... + 569519.

It is an arithmetic number, because the mean of its divisors is an integer number (3986500).

Almost surely, 2^22779980 is an apocalyptic number.

22779980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22779980 is an abundant number, since it is smaller than the sum of its proper divisors (25058020).

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

22779980 is a wasteful number, since it uses less digits than its factorization.

22779980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139008 (or 1139006 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 22779980 is about 4772.8377303235. The cubic root of 22779980 is about 283.4769683104.

The spelling of 22779980 in words is "twenty-two million, seven hundred seventy-nine thousand, nine hundred eighty".