306090012 has 48 divisors (see below), whose sum is σ = 740426400. Its totient is φ = 98300160.

The previous prime is 306090007. The next prime is 306090061. The reversal of 306090012 is 210090603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287962 + ... + 289022.

It is an arithmetic number, because the mean of its divisors is an integer number (15425550).

Almost surely, 2^306090012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306090012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370213200).

306090012 is an abundant number, since it is smaller than the sum of its proper divisors (434336388).

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

306090012 is a wasteful number, since it uses less digits than its factorization.

306090012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 306090012 is about 17495.4283171347. The cubic root of 306090012 is about 673.9324777459.

The spelling of 306090012 in words is "three hundred six million, ninety thousand, twelve".