345221104 has 40 divisors (see below), whose sum is σ = 693594000. Its totient is φ = 166258176.

The previous prime is 345221081. The next prime is 345221113. The reversal of 345221104 is 401122543.

345221104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×345221104² = 238355221293957632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305212 + ... + 306340.

It is an arithmetic number, because the mean of its divisors is an integer number (17339850).

Almost surely, 2^345221104 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 345221104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346797000).

345221104 is an abundant number, since it is smaller than the sum of its proper divisors (348372896).

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

345221104 is a wasteful number, since it uses less digits than its factorization.

345221104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 345221104 is about 18580.1265872975. The cubic root of 345221104 is about 701.5077053770.

Adding to 345221104 its reverse (401122543), we get a palindrome (746343647).

The spelling of 345221104 in words is "three hundred forty-five million, two hundred twenty-one thousand, one hundred four".