345322280 has 32 divisors (see below), whose sum is σ = 790149600. Its totient is φ = 135786816.

The previous prime is 345322279. The next prime is 345322291. The reversal of 345322280 is 82223543.

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, 70802 + ... + 75521.

It is an arithmetic number, because the mean of its divisors is an integer number (24692175).

Almost surely, 2^345322280 is an apocalyptic number.

It is an amenable number.

345322280 is an abundant number, since it is smaller than the sum of its proper divisors (444827320).

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

345322280 is a wasteful number, since it uses less digits than its factorization.

345322280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146393 (or 146389 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 345322280 is about 18582.8490818819. The cubic root of 345322280 is about 701.5762303601.

The spelling of 345322280 in words is "three hundred forty-five million, three hundred twenty-two thousand, two hundred eighty".