345605238 has 64 divisors (see below), whose sum is σ = 866764800. Its totient is φ = 101112480.

The previous prime is 345605237. The next prime is 345605243. The reversal of 345605238 is 832506543.

It is a happy number.

345605238 is a `hidden beast` number, since 3 + 45 + 605 + 2 + 3 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345605237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7195 + ... + 27257.

It is an arithmetic number, because the mean of its divisors is an integer number (13543200).

Almost surely, 2^345605238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345605238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433382400).

345605238 is an abundant number, since it is smaller than the sum of its proper divisors (521159562).

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

345605238 is a wasteful number, since it uses less digits than its factorization.

345605238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20114 (or 20108 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 345605238 is about 18590.4609410310. The cubic root of 345605238 is about 701.7678025247.

The spelling of 345605238 in words is "three hundred forty-five million, six hundred five thousand, two hundred thirty-eight".