309422080 has 192 divisors, whose sum is σ = 842063040. Its totient is φ = 108134400.

The previous prime is 309422077. The next prime is 309422093. The reversal of 309422080 is 80224903.

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, 4618207 + ... + 4618273.

It is an arithmetic number, because the mean of its divisors is an integer number (4385745).

Almost surely, 2^309422080 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 309422080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421031520).

309422080 is an abundant number, since it is smaller than the sum of its proper divisors (532640960).

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

309422080 is a wasteful number, since it uses less digits than its factorization.

309422080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 309422080 is about 17590.3973803891. The cubic root of 309422080 is about 676.3691132180.

Adding to 309422080 its reverse (80224903), we get a palindrome (389646983).

The spelling of 309422080 in words is "three hundred nine million, four hundred twenty-two thousand, eighty".