345210138 has 96 divisors (see below), whose sum is σ = 933494016. Its totient is φ = 89766144.

The previous prime is 345210127. The next prime is 345210157. The reversal of 345210138 is 831012543.

It is a happy number.

345210138 is a `hidden beast` number, since 3 + 4 + 521 + 0 + 138 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118131 + ... + 121017.

It is an arithmetic number, because the mean of its divisors is an integer number (9723896).

Almost surely, 2^345210138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345210138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466747008).

345210138 is an abundant number, since it is smaller than the sum of its proper divisors (588283878).

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

345210138 is a wasteful number, since it uses less digits than its factorization.

345210138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988 (or 2985 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 345210138 is about 18579.8314847041. The cubic root of 345210138 is about 701.5002774659.

The spelling of 345210138 in words is "three hundred forty-five million, two hundred ten thousand, one hundred thirty-eight".