305420828 has 6 divisors (see below), whose sum is σ = 534486456. Its totient is φ = 152710412.

The previous prime is 305420809. The next prime is 305420851. The reversal of 305420828 is 828024503.

It is a junction number, because it is equal to n+sod(n) for n = 305420794 and 305420803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38177600 + ... + 38177607.

It is an arithmetic number, because the mean of its divisors is an integer number (89081076).

Almost surely, 2^305420828 is an apocalyptic number.

It is an amenable number.

305420828 is a deficient number, since it is larger than the sum of its proper divisors (229065628).

305420828 is a wasteful number, since it uses less digits than its factorization.

305420828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76355211 (or 76355209 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 305420828 is about 17476.2933140869. The cubic root of 305420828 is about 673.4409949948.

The spelling of 305420828 in words is "three hundred five million, four hundred twenty thousand, eight hundred twenty-eight".