345946280 has 32 divisors (see below), whose sum is σ = 779020200. Its totient is φ = 138264576.

The previous prime is 345946261. The next prime is 345946303. The reversal of 345946280 is 82649543.

It can be written as a sum of positive squares in 4 ways, for example, as 144817156 + 201129124 = 12034^2 + 14182^2 .

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, 59336 + ... + 64904.

Almost surely, 2^345946280 is an apocalyptic number.

It is an amenable number.

345946280 is an abundant number, since it is smaller than the sum of its proper divisors (433073920).

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

345946280 is a wasteful number, since it uses less digits than its factorization.

345946280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7133 (or 7129 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 345946280 is about 18599.6311791390. The cubic root of 345946280 is about 701.9985606148.

The spelling of 345946280 in words is "three hundred forty-five million, nine hundred forty-six thousand, two hundred eighty".