305113128 has 32 divisors (see below), whose sum is σ = 773530560. Its totient is φ = 100271360.

The previous prime is 305113099. The next prime is 305113177. The reversal of 305113128 is 821311503.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 305113098 and 305113107.

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, 87825 + ... + 91232.

It is an arithmetic number, because the mean of its divisors is an integer number (24172830).

Almost surely, 2^305113128 is an apocalyptic number.

It is an amenable number.

305113128 is an abundant number, since it is smaller than the sum of its proper divisors (468417432).

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

305113128 is a wasteful number, since it uses less digits than its factorization.

305113128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179137 (or 179133 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 305113128 is about 17467.4877415157. The cubic root of 305113128 is about 673.2147635111.

The spelling of 305113128 in words is "three hundred five million, one hundred thirteen thousand, one hundred twenty-eight".