304985117 has 16 divisors (see below), whose sum is σ = 333236592. Its totient is φ = 277954560.

The previous prime is 304985113. The next prime is 304985123. The reversal of 304985117 is 711589403.

It can be written as a sum of positive squares in 8 ways, for example, as 7284601 + 297700516 = 2699^2 + 17254^2 .

It is a cyclic number.

It is not a de Polignac number, because 304985117 - 2² = 304985113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304985113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145517 + ... + 147597.

It is an arithmetic number, because the mean of its divisors is an integer number (20827287).

Almost surely, 2^304985117 is an apocalyptic number.

304985117 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

304985117 is a deficient number, since it is larger than the sum of its proper divisors (28251475).

304985117 is a wasteful number, since it uses less digits than its factorization.

304985117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 304985117 is about 17463.8230923243. The cubic root of 304985117 is about 673.1206006776.

The spelling of 304985117 in words is "three hundred four million, nine hundred eighty-five thousand, one hundred seventeen".