307221996 has 48 divisors (see below), whose sum is σ = 726243840. Its totient is φ = 101075520.

The previous prime is 307221991. The next prime is 307222007. The reversal of 307221996 is 699122703.

It is not an unprimeable number, because it can be changed into a prime (307221991) 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 15 ways as a sum of consecutive naturals, for example, 336781 + ... + 337691.

It is an arithmetic number, because the mean of its divisors is an integer number (15130080).

Almost surely, 2^307221996 is an apocalyptic number.

It is an amenable number.

307221996 is an abundant number, since it is smaller than the sum of its proper divisors (419021844).

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

307221996 is a wasteful number, since it uses less digits than its factorization.

307221996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 307221996 is about 17527.7493135884. The cubic root of 307221996 is about 674.7622361495.

The spelling of 307221996 in words is "three hundred seven million, two hundred twenty-one thousand, nine hundred ninety-six".