128975130 has 24 divisors (see below), whose sum is σ = 335335572. Its totient is φ = 34393344.

The previous prime is 128975123. The next prime is 128975137. The reversal of 128975130 is 31579821.

It is an interprime number because it is at equal distance from previous prime (128975123) and next prime (128975137).

It can be written as a sum of positive squares in 2 ways, for example, as 128527569 + 447561 = 11337^2 + 669^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (128975137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716439 + ... + 716618.

Almost surely, 2^128975130 is an apocalyptic number.

128975130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128975130 is an abundant number, since it is smaller than the sum of its proper divisors (206360442).

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

128975130 is a wasteful number, since it uses less digits than its factorization.

128975130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433070 (or 1433067 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 128975130 is about 11356.7217981247. The cubic root of 128975130 is about 505.2449617042.

The spelling of 128975130 in words is "one hundred twenty-eight million, nine hundred seventy-five thousand, one hundred thirty".