128075090 has 32 divisors (see below), whose sum is σ = 270841536. Its totient is φ = 42989760.

The previous prime is 128074997. The next prime is 128075111. The reversal of 128075090 is 90570821.

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, 43352 + ... + 46211.

It is an arithmetic number, because the mean of its divisors is an integer number (8463798).

Almost surely, 2^128075090 is an apocalyptic number.

128075090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128075090 is an abundant number, since it is smaller than the sum of its proper divisors (142766446).

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

128075090 is a wasteful number, since it uses less digits than its factorization.

128075090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89594.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 128075090 is about 11317.0265529423. The cubic root of 128075090 is about 504.0669501428.

The spelling of 128075090 in words is "one hundred twenty-eight million, seventy-five thousand, ninety".