309798674 has 16 divisors (see below), whose sum is σ = 474040512. Its totient is φ = 151792368.

The previous prime is 309798673. The next prime is 309798679. The reversal of 309798674 is 476897903.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (309798673) 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, 136997 + ... + 139239.

It is an arithmetic number, because the mean of its divisors is an integer number (29627532).

Almost surely, 2^309798674 is an apocalyptic number.

309798674 is a deficient number, since it is larger than the sum of its proper divisors (164241838).

309798674 is a wasteful number, since it uses less digits than its factorization.

309798674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 309798674 is about 17601.0986588906. The cubic root of 309798674 is about 676.6434022863.

The spelling of 309798674 in words is "three hundred nine million, seven hundred ninety-eight thousand, six hundred seventy-four".