22787245 has 16 divisors (see below), whose sum is σ = 30078720. Its totient is φ = 16467264.

The previous prime is 22787239. The next prime is 22787249. The reversal of 22787245 is 54278722.

It is a cyclic number.

It is not a de Polignac number, because 22787245 - 2⁷ = 22787117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22787249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (1879920).

Almost surely, 2^22787245 is an apocalyptic number.

It is an amenable number.

22787245 is a deficient number, since it is larger than the sum of its proper divisors (7291475).

22787245 is a wasteful number, since it uses less digits than its factorization.

22787245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524.

The product of its digits is 62720, while the sum is 37.

The square root of 22787245 is about 4773.5987472765. The cubic root of 22787245 is about 283.5071006353.

It can be divided in two parts, 22787 and 245, that added together give a palindrome (23032).

The spelling of 22787245 in words is "twenty-two million, seven hundred eighty-seven thousand, two hundred forty-five".