305412020 has 12 divisors (see below), whose sum is σ = 641365284. Its totient is φ = 122164800.

The previous prime is 305412017. The next prime is 305412047. The reversal of 305412020 is 20214503.

It can be written as a sum of positive squares in 2 ways, for example, as 110586256 + 194825764 = 10516^2 + 13958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 305412020.

It is a congruent number.

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, 7635281 + ... + 7635320.

It is an arithmetic number, because the mean of its divisors is an integer number (53447107).

Almost surely, 2^305412020 is an apocalyptic number.

It is an amenable number.

305412020 is an abundant number, since it is smaller than the sum of its proper divisors (335953264).

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

305412020 is a wasteful number, since it uses less digits than its factorization.

305412020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15270610 (or 15270608 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 305412020 is about 17476.0413137530. The cubic root of 305412020 is about 673.4345211673.

Adding to 305412020 its reverse (20214503), we get a palindrome (325626523).

The spelling of 305412020 in words is "three hundred five million, four hundred twelve thousand, twenty".