22397597000 has 32 divisors (see below), whose sum is σ = 52410379320. Its totient is φ = 8959038400.

The previous prime is 22397596979. The next prime is 22397597011. The reversal of 22397597000 is 79579322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11139113764 + 11258483236 = 105542^2 + 106106^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11197799 + ... + 11199798.

Almost surely, 2^22397597000 is an apocalyptic number.

22397597000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22397597000 is an abundant number, since it is smaller than the sum of its proper divisors (30012782320).

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

22397597000 is a wasteful number, since it uses less digits than its factorization.

22397597000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22397618 (or 22397604 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 22397597000 in words is "twenty-two billion, three hundred ninety-seven million, five hundred ninety-seven thousand".