32319181428 has 96 divisors (see below), whose sum is σ = 79638370560. Its totient is φ = 10185477120.

The previous prime is 32319181421. The next prime is 32319181451. The reversal of 32319181428 is 82418191323.

It is a self number, because there is not a number n which added to its sum of digits gives 32319181428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32319181421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11636776 + ... + 11639552.

It is an arithmetic number, because the mean of its divisors is an integer number (829566360).

Almost surely, 2^32319181428 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 32319181428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39819185280).

32319181428 is an abundant number, since it is smaller than the sum of its proper divisors (47319189132).

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

32319181428 is a wasteful number, since it uses less digits than its factorization.

32319181428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497 (or 3495 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The spelling of 32319181428 in words is "thirty-two billion, three hundred nineteen million, one hundred eighty-one thousand, four hundred twenty-eight".