22040688 has 20 divisors (see below), whose sum is σ = 56938568. Its totient is φ = 7346880.

The previous prime is 22040663. The next prime is 22040699. The reversal of 22040688 is 88604022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229543 + ... + 229638.

Almost surely, 2^22040688 is an apocalyptic number.

It is an amenable number.

22040688 is an abundant number, since it is smaller than the sum of its proper divisors (34897880).

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

22040688 is a wasteful number, since it uses less digits than its factorization.

22040688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459192 (or 459186 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 22040688 is about 4694.7511116139. The cubic root of 22040688 is about 280.3765681615.

The spelling of 22040688 in words is "twenty-two million, forty thousand, six hundred eighty-eight".