309678096 has 160 divisors (see below), whose sum is σ = 1016823808. Its totient is φ = 79004160.

The previous prime is 309678091. The next prime is 309678113. The reversal of 309678096 is 690876903.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (309678091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134265 + ... + 136551.

Almost surely, 2^309678096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 309678096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508411904).

309678096 is an abundant number, since it is smaller than the sum of its proper divisors (707145712).

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

309678096 is a wasteful number, since it uses less digits than its factorization.

309678096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 309678096 is about 17597.6730279887. The cubic root of 309678096 is about 676.5556045191. Note that the first 3 decimals are identical.

The spelling of 309678096 in words is "three hundred nine million, six hundred seventy-eight thousand, ninety-six".