305321828 has 12 divisors (see below), whose sum is σ = 610643712. Its totient is φ = 130852200.

The previous prime is 305321813. The next prime is 305321837. The reversal of 305321828 is 828123503.

305321828 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 305321794 and 305321803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5452148 + ... + 5452203.

It is an arithmetic number, because the mean of its divisors is an integer number (50886976).

Almost surely, 2^305321828 is an apocalyptic number.

It is an amenable number.

305321828 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

305321828 is a wasteful number, since it uses less digits than its factorization.

305321828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10904362 (or 10904360 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 305321828 is about 17473.4606761225. The cubic root of 305321828 is about 673.3682234205.

The spelling of 305321828 in words is "three hundred five million, three hundred twenty-one thousand, eight hundred twenty-eight".