22197604 has 48 divisors (see below), whose sum is σ = 46118016. Its totient is φ = 9216000.

The previous prime is 22197601. The next prime is 22197613. The reversal of 22197604 is 40679122.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22197601) 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, 86244 + ... + 86500.

It is an arithmetic number, because the mean of its divisors is an integer number (960792).

Almost surely, 2^22197604 is an apocalyptic number.

It is an amenable number.

22197604 is an abundant number, since it is smaller than the sum of its proper divisors (23920412).

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

22197604 is a wasteful number, since it uses less digits than its factorization.

22197604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 22197604 is about 4711.4333275554. The cubic root of 22197604 is about 281.0403643421.

It can be divided in two parts, 22197 and 604, that added together give a square (22801 = 151²).

The spelling of 22197604 in words is "twenty-two million, one hundred ninety-seven thousand, six hundred four".