305011020 has 24 divisors (see below), whose sum is σ = 854031024. Its totient is φ = 81336256.

The previous prime is 305011019. The next prime is 305011033. The reversal of 305011020 is 20110503.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 305010987 and 305011005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2541699 + ... + 2541818.

It is an arithmetic number, because the mean of its divisors is an integer number (35584626).

Almost surely, 2^305011020 is an apocalyptic number.

305011020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

305011020 is an abundant number, since it is smaller than the sum of its proper divisors (549020004).

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

305011020 is a wasteful number, since it uses less digits than its factorization.

305011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083529 (or 5083527 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 305011020 is about 17464.5646954054. The cubic root of 305011020 is about 673.1396566340.

Adding to 305011020 its reverse (20110503), we get a palindrome (325121523).

The spelling of 305011020 in words is "three hundred five million, eleven thousand, twenty".