130162728 has 32 divisors (see below), whose sum is σ = 325928160. Its totient is φ = 43318080.

The previous prime is 130162687. The next prime is 130162729. The reversal of 130162728 is 827261031.

It is a junction number, because it is equal to n+sod(n) for n = 130162695 and 130162704.

It is not an unprimeable number, because it can be changed into a prime (130162729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12243 + ... + 20253.

It is an arithmetic number, because the mean of its divisors is an integer number (10185255).

Almost surely, 2^130162728 is an apocalyptic number.

It is an amenable number.

130162728 is an abundant number, since it is smaller than the sum of its proper divisors (195765432).

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

130162728 is a wasteful number, since it uses less digits than its factorization.

130162728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8697 (or 8693 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 130162728 is about 11408.8881140977. Note that the first 3 decimals coincide. The cubic root of 130162728 is about 506.7909848066.

The spelling of 130162728 in words is "one hundred thirty million, one hundred sixty-two thousand, seven hundred twenty-eight".