345068440 has 64 divisors (see below), whose sum is σ = 804568320. Its totient is φ = 133056000.

The previous prime is 345068411. The next prime is 345068441. The reversal of 345068440 is 44860543.

It is a junction number, because it is equal to n+sod(n) for n = 345068396 and 345068405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345068441) 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, 521710 + ... + 522370.

It is an arithmetic number, because the mean of its divisors is an integer number (12571380).

Almost surely, 2^345068440 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 345068440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402284160).

345068440 is an abundant number, since it is smaller than the sum of its proper divisors (459499880).

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

345068440 is a wasteful number, since it uses less digits than its factorization.

345068440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 345068440 is about 18576.0178725151. The cubic root of 345068440 is about 701.4042829988.

The spelling of 345068440 in words is "three hundred forty-five million, sixty-eight thousand, four hundred forty".