345375440 has 20 divisors (see below), whose sum is σ = 802998084. Its totient is φ = 138150144.

The previous prime is 345375421. The next prime is 345375449. The reversal of 345375440 is 44573543.

It can be written as a sum of positive squares in 2 ways, for example, as 91164304 + 254211136 = 9548^2 + 15944^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 345375440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345375449) 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, 2158517 + ... + 2158676.

Almost surely, 2^345375440 is an apocalyptic number.

It is an amenable number.

345375440 is an abundant number, since it is smaller than the sum of its proper divisors (457622644).

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

345375440 is a wasteful number, since it uses less digits than its factorization.

345375440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317206 (or 4317200 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 35.

The square root of 345375440 is about 18584.2793780119. The cubic root of 345375440 is about 701.6122294648.

The spelling of 345375440 in words is "three hundred forty-five million, three hundred seventy-five thousand, four hundred forty".