345403688 has 64 divisors (see below), whose sum is σ = 810777600. Its totient is φ = 134507520.

The previous prime is 345403657. The next prime is 345403691. The reversal of 345403688 is 886304543.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21353 + ... + 33863.

It is an arithmetic number, because the mean of its divisors is an integer number (12668400).

Almost surely, 2^345403688 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 345403688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405388800).

345403688 is an abundant number, since it is smaller than the sum of its proper divisors (465373912).

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

345403688 is a wasteful number, since it uses less digits than its factorization.

345403688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12570 (or 12566 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 345403688 is about 18585.0393596570. The cubic root of 345403688 is about 701.6313570572.

The spelling of 345403688 in words is "three hundred forty-five million, four hundred three thousand, six hundred eighty-eight".