128810290 has 32 divisors (see below), whose sum is σ = 268346880. Its totient is φ = 43602624.

The previous prime is 128810287. The next prime is 128810321. The reversal of 128810290 is 92018821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6117 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (8385840).

Almost surely, 2^128810290 is an apocalyptic number.

128810290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128810290 is an abundant number, since it is smaller than the sum of its proper divisors (139536590).

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

128810290 is a wasteful number, since it uses less digits than its factorization.

128810290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23386.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 128810290 is about 11349.4621017914. The cubic root of 128810290 is about 505.0296228089.

The spelling of 128810290 in words is "one hundred twenty-eight million, eight hundred ten thousand, two hundred ninety".