162800220 has 192 divisors, whose sum is σ = 525127680. Its totient is φ = 37324800.

The previous prime is 162800219. The next prime is 162800249. The reversal of 162800220 is 22008261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1493526 + ... + 1493634.

It is an arithmetic number, because the mean of its divisors is an integer number (2735040).

Almost surely, 2^162800220 is an apocalyptic number.

162800220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162800220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262563840).

162800220 is an abundant number, since it is smaller than the sum of its proper divisors (362327460).

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

162800220 is a wasteful number, since it uses less digits than its factorization.

162800220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 162800220 is about 12759.3189473420. The cubic root of 162800220 is about 546.0322942430.

Adding to 162800220 its reverse (22008261), we get a palindrome (184808481).

The spelling of 162800220 in words is "one hundred sixty-two million, eight hundred thousand, two hundred twenty".