307012220 has 24 divisors (see below), whose sum is σ = 665524608. Its totient is φ = 118843200.

The previous prime is 307012193. The next prime is 307012243. The reversal of 307012220 is 22210703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246971 + ... + 248210.

It is an arithmetic number, because the mean of its divisors is an integer number (27730192).

Almost surely, 2^307012220 is an apocalyptic number.

It is an amenable number.

307012220 is an abundant number, since it is smaller than the sum of its proper divisors (358512388).

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

307012220 is a wasteful number, since it uses less digits than its factorization.

307012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495221 (or 495219 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 307012220 is about 17521.7641805841. The cubic root of 307012220 is about 674.6086217662.

Adding to 307012220 its reverse (22210703), we get a palindrome (329222923).

The spelling of 307012220 in words is "three hundred seven million, twelve thousand, two hundred twenty".