128802270 has 32 divisors (see below), whose sum is σ = 312193440. Its totient is φ = 34006400.

The previous prime is 128802263. The next prime is 128802299. The reversal of 128802270 is 72208821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18225 + ... + 24284.

It is an arithmetic number, because the mean of its divisors is an integer number (9756045).

Almost surely, 2^128802270 is an apocalyptic number.

128802270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128802270 is an abundant number, since it is smaller than the sum of its proper divisors (183391170).

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

128802270 is a wasteful number, since it uses less digits than its factorization.

128802270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42620.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 128802270 is about 11349.1087755823. The cubic root of 128802270 is about 505.0191411887.

The spelling of 128802270 in words is "one hundred twenty-eight million, eight hundred two thousand, two hundred seventy".