307248220 has 12 divisors (see below), whose sum is σ = 645221304. Its totient is φ = 122899280.

The previous prime is 307248217. The next prime is 307248269. The reversal of 307248220 is 22842703.

307248220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 7681186 + ... + 7681225.

It is an arithmetic number, because the mean of its divisors is an integer number (53768442).

Almost surely, 2^307248220 is an apocalyptic number.

It is an amenable number.

307248220 is an abundant number, since it is smaller than the sum of its proper divisors (337973084).

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

307248220 is a wasteful number, since it uses less digits than its factorization.

307248220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15362420 (or 15362418 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 307248220 is about 17528.4973685710. The cubic root of 307248220 is about 674.7814344943.

The spelling of 307248220 in words is "three hundred seven million, two hundred forty-eight thousand, two hundred twenty".