22788747 has 6 divisors (see below), whose sum is σ = 32917092. Its totient is φ = 15192492.

The previous prime is 22788737. The next prime is 22788761. The reversal of 22788747 is 74788722.

It is not a de Polignac number, because 22788747 - 2⁶ = 22788683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22788737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1266033 + ... + 1266050.

It is an arithmetic number, because the mean of its divisors is an integer number (5486182).

Almost surely, 2^22788747 is an apocalyptic number.

22788747 is a deficient number, since it is larger than the sum of its proper divisors (10128345).

22788747 is a wasteful number, since it uses less digits than its factorization.

22788747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532089 (or 2532086 counting only the distinct ones).

The product of its digits is 351232, while the sum is 45.

The square root of 22788747 is about 4773.7560683386. The cubic root of 22788747 is about 283.5133295339.

It can be divided in two parts, 2278 and 8747, that added together give a square (11025 = 105²).

The spelling of 22788747 in words is "twenty-two million, seven hundred eighty-eight thousand, seven hundred forty-seven".