130660128 has 96 divisors (see below), whose sum is σ = 386003520. Its totient is φ = 43530048.

The previous prime is 130660111. The next prime is 130660129. The reversal of 130660128 is 821066031.

130660128 is a `hidden beast` number, since 1 + 30 + 6 + 601 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (130660129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69051 + ... + 70917.

It is an arithmetic number, because the mean of its divisors is an integer number (4020870).

Almost surely, 2^130660128 is an apocalyptic number.

130660128 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 130660128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193001760).

130660128 is an abundant number, since it is smaller than the sum of its proper divisors (255343392).

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

130660128 is an frugal number, since it uses more digits than its factorization.

130660128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 130660128 is about 11430.6661223220. Note that the first 3 decimals coincide. The cubic root of 130660128 is about 507.4357096199.

The spelling of 130660128 in words is "one hundred thirty million, six hundred sixty thousand, one hundred twenty-eight".