345882290 has 32 divisors (see below), whose sum is σ = 688610160. Its totient is φ = 124257024.

The previous prime is 345882281. The next prime is 345882301. The reversal of 345882290 is 92288543.

It can be written as a sum of positive squares in 8 ways, for example, as 167365969 + 178516321 = 12937^2 + 13361^2 .

It is a Curzon 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, 31145 + ... + 40764.

Almost surely, 2^345882290 is an apocalyptic number.

345882290 is a deficient number, since it is larger than the sum of its proper divisors (342727870).

345882290 is a wasteful number, since it uses less digits than its factorization.

345882290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71966.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 345882290 is about 18597.9109041849. The cubic root of 345882290 is about 701.9552748404.

The spelling of 345882290 in words is "three hundred forty-five million, eight hundred eighty-two thousand, two hundred ninety".