22197456 has 40 divisors (see below), whose sum is σ = 63716160. Its totient is φ = 7399008.

The previous prime is 22197449. The next prime is 22197467. The reversal of 22197456 is 65479122.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22197456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25260 + ... + 26123.

It is an arithmetic number, because the mean of its divisors is an integer number (1592904).

Almost surely, 2^22197456 is an apocalyptic number.

It is an amenable number.

22197456 is an abundant number, since it is smaller than the sum of its proper divisors (41518704).

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

22197456 is a wasteful number, since it uses less digits than its factorization.

22197456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51400 (or 51388 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 22197456 is about 4711.4176210563. The cubic root of 22197456 is about 281.0397397392.

The spelling of 22197456 in words is "twenty-two million, one hundred ninety-seven thousand, four hundred fifty-six".