305151020 has 48 divisors (see below), whose sum is σ = 714238560. Its totient is φ = 108831744.

The previous prime is 305151019. The next prime is 305151043. The reversal of 305151020 is 20151503.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 305151020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17159 + ... + 30078.

It is an arithmetic number, because the mean of its divisors is an integer number (14879970).

Almost surely, 2^305151020 is an apocalyptic number.

It is an amenable number.

305151020 is an abundant number, since it is smaller than the sum of its proper divisors (409087540).

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

305151020 is a wasteful number, since it uses less digits than its factorization.

305151020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47282 (or 47280 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 305151020 is about 17468.5723515117. The cubic root of 305151020 is about 673.2426312052.

The spelling of 305151020 in words is "three hundred five million, one hundred fifty-one thousand, twenty".