22398160 has 20 divisors (see below), whose sum is σ = 52075908. Its totient is φ = 8959232.

The previous prime is 22398149. The next prime is 22398161. The reversal of 22398160 is 6189322.

It can be written as a sum of positive squares in 2 ways, for example, as 10810944 + 11587216 = 3288^2 + 3404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22398161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 139909 + ... + 140068.

Almost surely, 2^22398160 is an apocalyptic number.

22398160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22398160 is an abundant number, since it is smaller than the sum of its proper divisors (29677748).

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

22398160 is a wasteful number, since it uses less digits than its factorization.

22398160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279990 (or 279984 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 22398160 is about 4732.6694370091. The cubic root of 22398160 is about 281.8842306012.

The spelling of 22398160 in words is "twenty-two million, three hundred ninety-eight thousand, one hundred sixty".