305428899 has 32 divisors (see below), whose sum is σ = 432288000. Its totient is φ = 191528064.

The previous prime is 305428897. The next prime is 305428901. The reversal of 305428899 is 998824503.

It is an interprime number because it is at equal distance from previous prime (305428897) and next prime (305428901).

It is not a de Polignac number, because 305428899 - 2¹ = 305428897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305428897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805692 + ... + 806070.

It is an arithmetic number, because the mean of its divisors is an integer number (13509000).

Almost surely, 2^305428899 is an apocalyptic number.

305428899 is a deficient number, since it is larger than the sum of its proper divisors (126859101).

305428899 is a wasteful number, since it uses less digits than its factorization.

305428899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 305428899 is about 17476.5242253716. The cubic root of 305428899 is about 673.4469270225.

The spelling of 305428899 in words is "three hundred five million, four hundred twenty-eight thousand, eight hundred ninety-nine".