345885728 has 24 divisors (see below), whose sum is σ = 716803920. Its totient is φ = 163840320.

The previous prime is 345885703. The next prime is 345885733. The reversal of 345885728 is 827588543.

It is a happy number.

345885728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283838 + ... + 285053.

It is an arithmetic number, because the mean of its divisors is an integer number (29866830).

Almost surely, 2^345885728 is an apocalyptic number.

345885728 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

345885728 is an abundant number, since it is smaller than the sum of its proper divisors (370918192).

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

345885728 is a wasteful number, since it uses less digits than its factorization.

345885728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568920 (or 568912 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 50.

The square root of 345885728 is about 18598.0033336915. The cubic root of 345885728 is about 701.9576005972.

The spelling of 345885728 in words is "three hundred forty-five million, eight hundred eighty-five thousand, seven hundred twenty-eight".