345422500 has 60 divisors (see below), whose sum is σ = 759891132. Its totient is φ = 137344000.

The previous prime is 345422477. The next prime is 345422557. The reversal of 345422500 is 5224543.

It can be written as a sum of positive squares in 10 ways, for example, as 292888996 + 52533504 = 17114^2 + 7248^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 582204 + ... + 582796.

Almost surely, 2^345422500 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 345422500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379945566).

345422500 is an abundant number, since it is smaller than the sum of its proper divisors (414468632).

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

345422500 is a wasteful number, since it uses less digits than its factorization.

345422500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 345422500 is about 18585.5454587698. The cubic root of 345422500 is about 701.6440946644.

The spelling of 345422500 in words is "three hundred forty-five million, four hundred twenty-two thousand, five hundred".