162249728 has 66 divisors (see below), whose sum is σ = 342569544. Its totient is φ = 76662784.

The previous prime is 162249709. The next prime is 162249749. The reversal of 162249728 is 827942261.

Its product of digits (96768) is a multiple of the sum of its prime divisors (108).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1954775 + ... + 1954857.

Almost surely, 2^162249728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162249728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171284772).

162249728 is an abundant number, since it is smaller than the sum of its proper divisors (180319816).

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

162249728 is an frugal number, since it uses more digits than its factorization.

162249728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 108 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 162249728 is about 12737.7285259186. The cubic root of 162249728 is about 545.4161487854.

It can be divided in two parts, 16224 and 9728, that added together give a palindrome (25952).

The spelling of 162249728 in words is "one hundred sixty-two million, two hundred forty-nine thousand, seven hundred twenty-eight".