309104224 has 96 divisors (see below), whose sum is σ = 738339840. Its totient is φ = 125452800.

The previous prime is 309104171. The next prime is 309104231. The reversal of 309104224 is 422401903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140767 + ... + 142945.

It is an arithmetic number, because the mean of its divisors is an integer number (7691040).

Almost surely, 2^309104224 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 309104224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369169920).

309104224 is an abundant number, since it is smaller than the sum of its proper divisors (429235616).

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

309104224 is a wasteful number, since it uses less digits than its factorization.

309104224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244 (or 2236 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 309104224 is about 17581.3601294098. The cubic root of 309104224 is about 676.1374322308.

The spelling of 309104224 in words is "three hundred nine million, one hundred four thousand, two hundred twenty-four".