18220596 has 12 divisors (see below), whose sum is σ = 42514752. Its totient is φ = 6073528.

The previous prime is 18220571. The next prime is 18220607. The reversal of 18220596 is 69502281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759180 + ... + 759203.

It is an arithmetic number, because the mean of its divisors is an integer number (3542896).

Almost surely, 2^18220596 is an apocalyptic number.

It is an amenable number.

18220596 is an abundant number, since it is smaller than the sum of its proper divisors (24294156).

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

18220596 is a wasteful number, since it uses less digits than its factorization.

18220596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518390 (or 1518388 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 18220596 is about 4268.5590074403. The cubic root of 18220596 is about 263.1403974079.

The spelling of 18220596 in words is "eighteen million, two hundred twenty thousand, five hundred ninety-six".