22770747 has 8 divisors (see below), whose sum is σ = 33734480. Its totient is φ = 15180480.

The previous prime is 22770733. The next prime is 22770749. The reversal of 22770747 is 74707722.

It is not a de Polignac number, because 22770747 - 2⁴ = 22770731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22770749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421654 + ... + 421707.

It is an arithmetic number, because the mean of its divisors is an integer number (4216810).

Almost surely, 2^22770747 is an apocalyptic number.

22770747 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22770747 is a deficient number, since it is larger than the sum of its proper divisors (10963733).

22770747 is an equidigital number, since it uses as much as digits as its factorization.

22770747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843370 (or 843364 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 22770747 is about 4771.8703880135. The cubic root of 22770747 is about 283.4386642595.

It can be divided in two parts, 2277074 and 7, that added together give a square (2277081 = 1509²).

The spelling of 22770747 in words is "twenty-two million, seven hundred seventy thousand, seven hundred forty-seven".