345447256 has 72 divisors (see below), whose sum is σ = 828300060. Its totient is φ = 134571360.

The previous prime is 345447241. The next prime is 345447283. The reversal of 345447256 is 652744543.

345447256 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43791 + ... + 51073.

Almost surely, 2^345447256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345447256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414150030).

345447256 is an abundant number, since it is smaller than the sum of its proper divisors (482852804).

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

345447256 is a wasteful number, since it uses less digits than its factorization.

345447256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7325 (or 7303 counting only the distinct ones).

The product of its digits is 403200, while the sum is 40.

The square root of 345447256 is about 18586.2114482753. The cubic root of 345447256 is about 701.6608562499.

The spelling of 345447256 in words is "three hundred forty-five million, four hundred forty-seven thousand, two hundred fifty-six".