350121728 has 108 divisors (see below), whose sum is σ = 782933760. Its totient is φ = 156119040.

The previous prime is 350121691. The next prime is 350121731. The reversal of 350121728 is 827121053.

It is a self number, because there is not a number n which added to its sum of digits gives 350121728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2756801 + ... + 2756927.

Almost surely, 2^350121728 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 350121728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391466880).

350121728 is an abundant number, since it is smaller than the sum of its proper divisors (432812032).

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

350121728 is a wasteful number, since it uses less digits than its factorization.

350121728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 350121728 is about 18711.5399686931. The cubic root of 350121728 is about 704.8115640776.

The spelling of 350121728 in words is "three hundred fifty million, one hundred twenty-one thousand, seven hundred twenty-eight".