22782765 has 16 divisors (see below), whose sum is σ = 38037888. Its totient is φ = 11622336.

The previous prime is 22782763. The next prime is 22782769. The reversal of 22782765 is 56728722.

It is not a de Polignac number, because 22782765 - 2¹ = 22782763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22782763) 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, 32674 + ... + 33363.

It is an arithmetic number, because the mean of its divisors is an integer number (2377368).

Almost surely, 2^22782765 is an apocalyptic number.

It is an amenable number.

22782765 is a deficient number, since it is larger than the sum of its proper divisors (15255123).

22782765 is a wasteful number, since it uses less digits than its factorization.

22782765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66068.

The product of its digits is 94080, while the sum is 39.

The square root of 22782765 is about 4773.1294765594. The cubic root of 22782765 is about 283.4885201377.

The spelling of 22782765 in words is "twenty-two million, seven hundred eighty-two thousand, seven hundred sixty-five".