18220088 has 16 divisors (see below), whose sum is σ = 35961000. Its totient is φ = 8630496.

The previous prime is 18220087. The next prime is 18220093. The reversal of 18220088 is 88002281.

It is a self number, because there is not a number n which added to its sum of digits gives 18220088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18220087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59783 + ... + 60086.

Almost surely, 2^18220088 is an apocalyptic number.

It is an amenable number.

18220088 is a deficient number, since it is larger than the sum of its proper divisors (17740912).

18220088 is a wasteful number, since it uses less digits than its factorization.

18220088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119894 (or 119890 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 18220088 is about 4268.4995021670. The cubic root of 18220088 is about 263.1379518866.

The spelling of 18220088 in words is "eighteen million, two hundred twenty thousand, eighty-eight".