305428100 has 36 divisors (see below), whose sum is σ = 666290688. Its totient is φ = 121524000.

The previous prime is 305428099. The next prime is 305428121. The reversal of 305428100 is 1824503.

305428100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×305428100² = 186572648539220000, which contains 22 as substring.

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, 11105 + ... + 27095.

Almost surely, 2^305428100 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 305428100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333145344).

305428100 is an abundant number, since it is smaller than the sum of its proper divisors (360862588).

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

305428100 is a wasteful number, since it uses less digits than its factorization.

305428100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16196 (or 16189 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 305428100 is about 17476.5013661202. The cubic root of 305428100 is about 673.4463397777.

The spelling of 305428100 in words is "three hundred five million, four hundred twenty-eight thousand, one hundred".