22770909 has 32 divisors (see below), whose sum is σ = 38804480. Its totient is φ = 12927600.

The previous prime is 22770901. The next prime is 22770919. The reversal of 22770909 is 90907722.

It is not a de Polignac number, because 22770909 - 2³ = 22770901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39594 + ... + 40164.

It is an arithmetic number, because the mean of its divisors is an integer number (1212640).

Almost surely, 2^22770909 is an apocalyptic number.

It is an amenable number.

22770909 is a deficient number, since it is larger than the sum of its proper divisors (16033571).

22770909 is a wasteful number, since it uses less digits than its factorization.

22770909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 22770909 is about 4771.8873624594. The cubic root of 22770909 is about 283.4393364224.

The spelling of 22770909 in words is "twenty-two million, seven hundred seventy thousand, nine hundred nine".