346128290 has 16 divisors (see below), whose sum is σ = 626296320. Its totient is φ = 137725680.

The previous prime is 346128283. The next prime is 346128329. The reversal of 346128290 is 92821643.

It is a self number, because there is not a number n which added to its sum of digits gives 346128290.

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, 88700 + ... + 92519.

It is an arithmetic number, because the mean of its divisors is an integer number (39143520).

Almost surely, 2^346128290 is an apocalyptic number.

346128290 is a deficient number, since it is larger than the sum of its proper divisors (280168030).

346128290 is a wasteful number, since it uses less digits than its factorization.

346128290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181417.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 346128290 is about 18604.5233747065. The cubic root of 346128290 is about 702.1216513606.

The spelling of 346128290 in words is "three hundred forty-six million, one hundred twenty-eight thousand, two hundred ninety".