307220073 has 8 divisors (see below), whose sum is σ = 433722528. Its totient is φ = 192765504.

The previous prime is 307220051. The next prime is 307220099. The reversal of 307220073 is 370022703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 307220073 - 2⁵ = 307220041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (307220273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3011911 + ... + 3012012.

It is an arithmetic number, because the mean of its divisors is an integer number (54215316).

Almost surely, 2^307220073 is an apocalyptic number.

It is an amenable number.

307220073 is a deficient number, since it is larger than the sum of its proper divisors (126502455).

307220073 is a wasteful number, since it uses less digits than its factorization.

307220073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023943.

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 307220073 is about 17527.6944576290. The cubic root of 307220073 is about 674.7608282962.

Adding to 307220073 its reverse (370022703), we get a palindrome (677242776).

The spelling of 307220073 in words is "three hundred seven million, two hundred twenty thousand, seventy-three".