128726370 has 24 divisors (see below), whose sum is σ = 334688796. Its totient is φ = 34327008.

The previous prime is 128726369. The next prime is 128726399. The reversal of 128726370 is 73627821.

128726370 is a `hidden beast` number, since 1 + 287 + 2 + 6 + 370 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 124478649 + 4247721 = 11157^2 + 2061^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 715057 + ... + 715236.

Almost surely, 2^128726370 is an apocalyptic number.

128726370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128726370 is an abundant number, since it is smaller than the sum of its proper divisors (205962426).

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

128726370 is a wasteful number, since it uses less digits than its factorization.

128726370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430306 (or 1430303 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 128726370 is about 11345.7644079189. The cubic root of 128726370 is about 504.9199232571.

The spelling of 128726370 in words is "one hundred twenty-eight million, seven hundred twenty-six thousand, three hundred seventy".