345694128 has 80 divisors (see below), whose sum is σ = 975041760. Its totient is φ = 104896512.

The previous prime is 345694121. The next prime is 345694169. The reversal of 345694128 is 821496543.

Its product of digits (207360) is a multiple of the sum of its prime divisors (7680).

It is a self number, because there is not a number n which added to its sum of digits gives 345694128.

It is not an unprimeable number, because it can be changed into a prime (345694121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41758 + ... + 49346.

It is an arithmetic number, because the mean of its divisors is an integer number (12188022).

Almost surely, 2^345694128 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 345694128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487520880).

345694128 is an abundant number, since it is smaller than the sum of its proper divisors (629347632).

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

345694128 is a wasteful number, since it uses less digits than its factorization.

345694128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686 (or 7680 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 345694128 is about 18592.8515295530. The cubic root of 345694128 is about 701.8279624854.

The spelling of 345694128 in words is "three hundred forty-five million, six hundred ninety-four thousand, one hundred twenty-eight".