345173444 has 72 divisors (see below), whose sum is σ = 787453632. Its totient is φ = 130818240.

The previous prime is 345173431. The next prime is 345173447. The reversal of 345173444 is 444371543.

It is a super-2 number, since 2×345173444² = 238289412885642272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345173447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77609 + ... + 81935.

It is an arithmetic number, because the mean of its divisors is an integer number (10936856).

Almost surely, 2^345173444 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 345173444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393726816).

345173444 is an abundant number, since it is smaller than the sum of its proper divisors (442280188).

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

345173444 is a wasteful number, since it uses less digits than its factorization.

345173444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393 (or 4384 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The square root of 345173444 is about 18578.8439898719. The cubic root of 345173444 is about 701.4754213368.

The spelling of 345173444 in words is "three hundred forty-five million, one hundred seventy-three thousand, four hundred forty-four".