128113290 has 24 divisors (see below), whose sum is σ = 333094788. Its totient is φ = 34163520.

The previous prime is 128113267. The next prime is 128113291. The reversal of 128113290 is 92311821.

It can be written as a sum of positive squares in 2 ways, for example, as 127712601 + 400689 = 11301^2 + 633^2 .

It is not an unprimeable number, because it can be changed into a prime (128113291) 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, 711651 + ... + 711830.

Almost surely, 2^128113290 is an apocalyptic number.

128113290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128113290 is an abundant number, since it is smaller than the sum of its proper divisors (204981498).

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

128113290 is a wasteful number, since it uses less digits than its factorization.

128113290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423494 (or 1423491 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 128113290 is about 11318.7141495843. The cubic root of 128113290 is about 504.1170599220.

The spelling of 128113290 in words is "one hundred twenty-eight million, one hundred thirteen thousand, two hundred ninety".