162188220 has 24 divisors (see below), whose sum is σ = 454127184. Its totient is φ = 43250176.

The previous prime is 162188207. The next prime is 162188287. The reversal of 162188220 is 22881261.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351509 + ... + 1351628.

It is an arithmetic number, because the mean of its divisors is an integer number (18921966).

Almost surely, 2^162188220 is an apocalyptic number.

162188220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162188220 is an abundant number, since it is smaller than the sum of its proper divisors (291938964).

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

162188220 is a wasteful number, since it uses less digits than its factorization.

162188220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703149 (or 2703147 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 162188220 is about 12735.3138948359. The cubic root of 162188220 is about 545.3472186306.

The spelling of 162188220 in words is "one hundred sixty-two million, one hundred eighty-eight thousand, two hundred twenty".