128746930 has 16 divisors (see below), whose sum is σ = 249571224. Its totient is φ = 47537280.

The previous prime is 128746913. The next prime is 128746949. The reversal of 128746930 is 39647821.

It can be written as a sum of positive squares in 4 ways, for example, as 89094721 + 39652209 = 9439^2 + 6297^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495051 + ... + 495310.

Almost surely, 2^128746930 is an apocalyptic number.

128746930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128746930 is a deficient number, since it is larger than the sum of its proper divisors (120824294).

128746930 is a wasteful number, since it uses less digits than its factorization.

128746930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990381.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 128746930 is about 11346.6704367405. The cubic root of 128746930 is about 504.9468035329.

The spelling of 128746930 in words is "one hundred twenty-eight million, seven hundred forty-six thousand, nine hundred thirty".