309380196 has 24 divisors (see below), whose sum is σ = 724991904. Its totient is φ = 102683200.

The previous prime is 309380191. The next prime is 309380209. The reversal of 309380196 is 691083903.

It is a super-2 number, since 2×309380196² = 191432211353996832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (309380191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52530 + ... + 58121.

It is an arithmetic number, because the mean of its divisors is an integer number (30207996).

Almost surely, 2^309380196 is an apocalyptic number.

It is an amenable number.

309380196 is an abundant number, since it is smaller than the sum of its proper divisors (415611708).

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

309380196 is a wasteful number, since it uses less digits than its factorization.

309380196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110891 (or 110889 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 309380196 is about 17589.2068041740. The cubic root of 309380196 is about 676.3385936095.

The spelling of 309380196 in words is "three hundred nine million, three hundred eighty thousand, one hundred ninety-six".