306147212 has 24 divisors (see below), whose sum is σ = 613525920. Its totient is φ = 130942080.

The previous prime is 306147211. The next prime is 306147241. The reversal of 306147212 is 212741603.

It is a super-2 number, since 2×306147212² = 187452230830745888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (306147211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3512 + ... + 24992.

It is an arithmetic number, because the mean of its divisors is an integer number (25563580).

Almost surely, 2^306147212 is an apocalyptic number.

It is an amenable number.

306147212 is an abundant number, since it is smaller than the sum of its proper divisors (307378708).

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

306147212 is a wasteful number, since it uses less digits than its factorization.

306147212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22001 (or 21999 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 306147212 is about 17497.0629535359. The cubic root of 306147212 is about 673.9744550894.

Adding to 306147212 its reverse (212741603), we get a palindrome (518888815).

The spelling of 306147212 in words is "three hundred six million, one hundred forty-seven thousand, two hundred twelve".