22770385 has 24 divisors (see below), whose sum is σ = 30576168. Its totient is φ = 16262400.

The previous prime is 22770353. The next prime is 22770389. The reversal of 22770385 is 58307722.

It can be written as a sum of positive squares in 4 ways, for example, as 1830609 + 20939776 = 1353^2 + 4576^2 .

It is not a de Polignac number, because 22770385 - 2⁵ = 22770353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22770385.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36597 + ... + 37213.

It is an arithmetic number, because the mean of its divisors is an integer number (1274007).

Almost surely, 2^22770385 is an apocalyptic number.

It is an amenable number.

22770385 is a deficient number, since it is larger than the sum of its proper divisors (7805783).

22770385 is a wasteful number, since it uses less digits than its factorization.

22770385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 22770385 is about 4771.8324572432. The cubic root of 22770385 is about 283.4371622543.

The spelling of 22770385 in words is "twenty-two million, seven hundred seventy thousand, three hundred eighty-five".