22201690 has 32 divisors (see below), whose sum is σ = 48078720. Its totient is φ = 7210944.

The previous prime is 22201687. The next prime is 22201691. The reversal of 22201690 is 9610222.

It is a happy number.

It is a super-2 number, since 2×22201690² = 985830077712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22201691) 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, 7017 + ... + 9676.

It is an arithmetic number, because the mean of its divisors is an integer number (1502460).

Almost surely, 2^22201690 is an apocalyptic number.

22201690 is an abundant number, since it is smaller than the sum of its proper divisors (25877030).

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

22201690 is a wasteful number, since it uses less digits than its factorization.

22201690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16726.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 22201690 is about 4711.8669336050. The cubic root of 22201690 is about 281.0576073514.

The spelling of 22201690 in words is "twenty-two million, two hundred one thousand, six hundred ninety".