18320622 has 16 divisors (see below), whose sum is σ = 36687360. Its totient is φ = 6099192.

The previous prime is 18320609. The next prime is 18320629. The reversal of 18320622 is 22602381.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18320592 and 18320601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18320629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5379 + ... + 8097.

It is an arithmetic number, because the mean of its divisors is an integer number (2292960).

Almost surely, 2^18320622 is an apocalyptic number.

18320622 is an abundant number, since it is smaller than the sum of its proper divisors (18366738).

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

18320622 is a wasteful number, since it uses less digits than its factorization.

18320622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 18320622 is about 4280.2595715681. The cubic root of 18320622 is about 263.6210414545.

The spelling of 18320622 in words is "eighteen million, three hundred twenty thousand, six hundred twenty-two".