22777980 has 24 divisors (see below), whose sum is σ = 63778512. Its totient is φ = 6074112.

The previous prime is 22777973. The next prime is 22778009. The reversal of 22777980 is 8977722.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 189757 + ... + 189876.

It is an arithmetic number, because the mean of its divisors is an integer number (2657438).

Almost surely, 2^22777980 is an apocalyptic number.

22777980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22777980 is an abundant number, since it is smaller than the sum of its proper divisors (41000532).

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

22777980 is a wasteful number, since it uses less digits than its factorization.

22777980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379645 (or 379643 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 22777980 is about 4772.6282067641. The cubic root of 22777980 is about 283.4686719828.

The spelling of 22777980 in words is "twenty-two million, seven hundred seventy-seven thousand, nine hundred eighty".