22766772 has 72 divisors (see below), whose sum is σ = 63840000. Its totient is φ = 6289920.

The previous prime is 22766761. The next prime is 22766819. The reversal of 22766772 is 27766722.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22766772.

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 23 ways as a sum of consecutive naturals, for example, 17604 + ... + 18852.

Almost surely, 2^22766772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22766772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31920000).

22766772 is an abundant number, since it is smaller than the sum of its proper divisors (41073228).

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

22766772 is a wasteful number, since it uses less digits than its factorization.

22766772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301 (or 1292 counting only the distinct ones).

The product of its digits is 98784, while the sum is 39.

The square root of 22766772 is about 4771.4538664856. The cubic root of 22766772 is about 283.4221703744.

The spelling of 22766772 in words is "twenty-two million, seven hundred sixty-six thousand, seven hundred seventy-two".