162298728 has 112 divisors (see below), whose sum is σ = 483390180. Its totient is φ = 50886144.

The previous prime is 162298699. The next prime is 162298753. The reversal of 162298728 is 827892261.

It can be written as a sum of positive squares in 2 ways, for example, as 158306724 + 3992004 = 12582^2 + 1998^2 .

It is a super-2 number, since 2×162298728² = 52681754220835968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 98326 + ... + 99962.

Almost surely, 2^162298728 is an apocalyptic number.

162298728 is a gapful number since it is divisible by the number (18) 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 162298728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241695090).

162298728 is an abundant number, since it is smaller than the sum of its proper divisors (321091452).

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

162298728 is a wasteful number, since it uses less digits than its factorization.

162298728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678 (or 1659 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 162298728 is about 12739.6518005792. The cubic root of 162298728 is about 545.4710491370.

The spelling of 162298728 in words is "one hundred sixty-two million, two hundred ninety-eight thousand, seven hundred twenty-eight".