22772649 has 16 divisors (see below), whose sum is σ = 31375232. Its totient is φ = 14681088.

The previous prime is 22772641. The next prime is 22772653. The reversal of 22772649 is 94627722.

It is not a de Polignac number, because 22772649 - 2³ = 22772641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22772641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20892 + ... + 21954.

It is an arithmetic number, because the mean of its divisors is an integer number (1960952).

Almost surely, 2^22772649 is an apocalyptic number.

It is an amenable number.

22772649 is a deficient number, since it is larger than the sum of its proper divisors (8602583).

22772649 is a wasteful number, since it uses less digits than its factorization.

22772649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its digits is 84672, while the sum is 39.

The square root of 22772649 is about 4772.0696767755. The cubic root of 22772649 is about 283.4465557489.

The spelling of 22772649 in words is "twenty-two million, seven hundred seventy-two thousand, six hundred forty-nine".