22477764 has 12 divisors (see below), whose sum is σ = 52448144. Its totient is φ = 7492584.

The previous prime is 22477729. The next prime is 22477769. The reversal of 22477764 is 46777422.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (22477769) 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, 936562 + ... + 936585.

Almost surely, 2^22477764 is an apocalyptic number.

It is an amenable number.

22477764 is an abundant number, since it is smaller than the sum of its proper divisors (29970380).

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

22477764 is a wasteful number, since it uses less digits than its factorization.

22477764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873154 (or 1873152 counting only the distinct ones).

The product of its digits is 131712, while the sum is 39.

The square root of 22477764 is about 4741.0720306699. The cubic root of 22477764 is about 282.2177785574.

It can be divided in two parts, 2247 and 7764, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 22477764 in words is "twenty-two million, four hundred seventy-seven thousand, seven hundred sixty-four".