305030278028 has 48 divisors (see below), whose sum is σ = 644385122304. Its totient is φ = 123568139520.

The previous prime is 305030278019. The next prime is 305030278031. The reversal of 305030278028 is 820872030503.

It is a junction number, because it is equal to n+sod(n) for n = 305030277982 and 305030278000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4048925 + ... + 4123572.

It is an arithmetic number, because the mean of its divisors is an integer number (13424690048).

Almost surely, 2^305030278028 is an apocalyptic number.

It is an amenable number.

305030278028 is an abundant number, since it is smaller than the sum of its proper divisors (339354844276).

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

305030278028 is a wasteful number, since it uses less digits than its factorization.

305030278028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8172582 (or 8172580 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 305030278028 in words is "three hundred five billion, thirty million, two hundred seventy-eight thousand, twenty-eight".