22957780 has 12 divisors (see below), whose sum is σ = 48211380. Its totient is φ = 9183104.

The previous prime is 22957733. The next prime is 22957783. The reversal of 22957780 is 8775922.

It can be written as a sum of positive squares in 2 ways, for example, as 9326916 + 13630864 = 3054^2 + 3692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22957783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573925 + ... + 573964.

It is an arithmetic number, because the mean of its divisors is an integer number (4017615).

Almost surely, 2^22957780 is an apocalyptic number.

22957780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22957780 is an abundant number, since it is smaller than the sum of its proper divisors (25253600).

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

22957780 is a wasteful number, since it uses less digits than its factorization.

22957780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147898 (or 1147896 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 22957780 is about 4791.4277621603. The cubic root of 22957780 is about 284.2125797147.

The spelling of 22957780 in words is "twenty-two million, nine hundred fifty-seven thousand, seven hundred eighty".