309850671832 has 96 divisors (see below), whose sum is σ = 635870466000. Its totient is φ = 141475756032.

The previous prime is 309850671829. The next prime is 309850671857. The reversal of 309850671832 is 238176058903.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 309850671832.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56861044 + ... + 56866492.

Almost surely, 2^309850671832 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 309850671832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317935233000).

309850671832 is an abundant number, since it is smaller than the sum of its proper divisors (326019794168).

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

309850671832 is a wasteful number, since it uses less digits than its factorization.

309850671832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925 (or 5908 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 309850671832 in words is "three hundred nine billion, eight hundred fifty million, six hundred seventy-one thousand, eight hundred thirty-two".