162216090 has 48 divisors (see below), whose sum is σ = 432058536. Its totient is φ = 42201600.

The previous prime is 162216077. The next prime is 162216097. The reversal of 162216090 is 90612261.

162216090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 115799121 + 46416969 = 10761^2 + 6813^2 .

It is not an unprimeable number, because it can be changed into a prime (162216097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18291 + ... + 25670.

Almost surely, 2^162216090 is an apocalyptic number.

162216090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

162216090 is an abundant number, since it is smaller than the sum of its proper divisors (269842446).

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

162216090 is a wasteful number, since it uses less digits than its factorization.

162216090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44015 (or 44012 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 162216090 is about 12736.4080493678. The cubic root of 162216090 is about 545.3784538553.

The spelling of 162216090 in words is "one hundred sixty-two million, two hundred sixteen thousand, ninety".