128069290 has 16 divisors (see below), whose sum is σ = 240547968. Its totient is φ = 49000336.

The previous prime is 128069261. The next prime is 128069311. The reversal of 128069290 is 92960821.

It is a super-2 number, since 2×128069290² = 32803486082208200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278182 + ... + 278641.

It is an arithmetic number, because the mean of its divisors is an integer number (15034248).

Almost surely, 2^128069290 is an apocalyptic number.

128069290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128069290 is a deficient number, since it is larger than the sum of its proper divisors (112478678).

128069290 is a wasteful number, since it uses less digits than its factorization.

128069290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556853.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 128069290 is about 11316.7702989855. The cubic root of 128069290 is about 504.0593409805.

The spelling of 128069290 in words is "one hundred twenty-eight million, sixty-nine thousand, two hundred ninety".