351140868 has 72 divisors (see below), whose sum is σ = 961630488. Its totient is φ = 107394048.

The previous prime is 351140837. The next prime is 351140891. The reversal of 351140868 is 868041153.

It can be written as a sum of positive squares in 4 ways, for example, as 3392964 + 347747904 = 1842^2 + 18648^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78796 + ... + 83132.

It is an arithmetic number, because the mean of its divisors is an integer number (13355979).

Almost surely, 2^351140868 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 351140868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480815244).

351140868 is an abundant number, since it is smaller than the sum of its proper divisors (610489620).

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

351140868 is a wasteful number, since it uses less digits than its factorization.

351140868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 351140868 is about 18738.7531068639. The cubic root of 351140868 is about 705.4947605936.

The spelling of 351140868 in words is "three hundred fifty-one million, one hundred forty thousand, eight hundred sixty-eight".