128530370 has 32 divisors (see below), whose sum is σ = 248343408. Its totient is φ = 47720448.

The previous prime is 128530333. The next prime is 128530399. The reversal of 128530370 is 73035821.

It can be written as a sum of positive squares in 8 ways, for example, as 78304801 + 50225569 = 8849^2 + 7087^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7232 + ... + 17588.

Almost surely, 2^128530370 is an apocalyptic number.

128530370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128530370 is a deficient number, since it is larger than the sum of its proper divisors (119813038).

128530370 is a wasteful number, since it uses less digits than its factorization.

128530370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10454.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 128530370 is about 11337.1235328896. The cubic root of 128530370 is about 504.6635277843.

The spelling of 128530370 in words is "one hundred twenty-eight million, five hundred thirty thousand, three hundred seventy".