345254440 has 64 divisors (see below), whose sum is σ = 821560320. Its totient is φ = 130368000.

The previous prime is 345254401. The next prime is 345254443. The reversal of 345254440 is 44452543.

345254440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (345254443) 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, 47445 + ... + 54235.

It is an arithmetic number, because the mean of its divisors is an integer number (12836880).

Almost surely, 2^345254440 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 345254440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410780160).

345254440 is an abundant number, since it is smaller than the sum of its proper divisors (476305880).

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

345254440 is a wasteful number, since it uses less digits than its factorization.

345254440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874 (or 6870 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 345254440 is about 18581.0236531791. The cubic root of 345254440 is about 701.5302848272.

The spelling of 345254440 in words is "three hundred forty-five million, two hundred fifty-four thousand, four hundred forty".