22740786 has 12 divisors (see below), whose sum is σ = 49271742. Its totient is φ = 7580256.

The previous prime is 22740761. The next prime is 22740787. The reversal of 22740786 is 68704722.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 11350161 = 3375^2 + 3369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22740786.

It is not an unprimeable number, because it can be changed into a prime (22740787) 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, 631671 + ... + 631706.

Almost surely, 2^22740786 is an apocalyptic number.

22740786 is an abundant number, since it is smaller than the sum of its proper divisors (26530956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22740786 is a wasteful number, since it uses less digits than its factorization.

22740786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263385 (or 1263382 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 22740786 is about 4768.7300196174. The cubic root of 22740786 is about 283.3142966064.

The spelling of 22740786 in words is "twenty-two million, seven hundred forty thousand, seven hundred eighty-six".