22140764 has 6 divisors (see below), whose sum is σ = 38746344. Its totient is φ = 11070380.

The previous prime is 22140709. The next prime is 22140773. The reversal of 22140764 is 46704122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2767592 + ... + 2767599.

It is an arithmetic number, because the mean of its divisors is an integer number (6457724).

Almost surely, 2^22140764 is an apocalyptic number.

It is an amenable number.

22140764 is a deficient number, since it is larger than the sum of its proper divisors (16605580).

22140764 is a wasteful number, since it uses less digits than its factorization.

22140764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535195 (or 5535193 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 22140764 is about 4705.3973264752. The cubic root of 22140764 is about 280.8002785418.

Adding to 22140764 its reverse (46704122), we get a palindrome (68844886).

The spelling of 22140764 in words is "twenty-two million, one hundred forty thousand, seven hundred sixty-four".