345868840 has 16 divisors (see below), whose sum is σ = 778204980. Its totient is φ = 138347520.

The previous prime is 345868811. The next prime is 345868843. The reversal of 345868840 is 48868543.

It can be written as a sum of positive squares in 2 ways, for example, as 340697764 + 5171076 = 18458^2 + 2274^2 .

It is not an unprimeable number, because it can be changed into a prime (345868843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4323321 + ... + 4323400.

Almost surely, 2^345868840 is an apocalyptic number.

It is an amenable number.

345868840 is an abundant number, since it is smaller than the sum of its proper divisors (432336140).

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

345868840 is a wasteful number, since it uses less digits than its factorization.

345868840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646732 (or 8646728 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The square root of 345868840 is about 18597.5493009160. The cubic root of 345868840 is about 701.9461759638.

The spelling of 345868840 in words is "three hundred forty-five million, eight hundred sixty-eight thousand, eight hundred forty".