22040764 has 24 divisors (see below), whose sum is σ = 39629408. Its totient is φ = 10722240.

The previous prime is 22040749. The next prime is 22040771. The reversal of 22040764 is 46704022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24694 + ... + 25570.

Almost surely, 2^22040764 is an apocalyptic number.

It is an amenable number.

22040764 is a deficient number, since it is larger than the sum of its proper divisors (17588644).

22040764 is a wasteful number, since it uses less digits than its factorization.

22040764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 22040764 is about 4694.7592057527. The cubic root of 22040764 is about 280.3768904230.

Adding to 22040764 its reverse (46704022), we get a palindrome (68744786).

The spelling of 22040764 in words is "twenty-two million, forty thousand, seven hundred sixty-four".