32389920784 has 45 divisors (see below), whose sum is σ = 67973789559. Its totient is φ = 14944874880.

The previous prime is 32389920659. The next prime is 32389920847. The reversal of 32389920784 is 48702998323.

The square root of 32389920784 is 179972.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 13928720400 + 18461200384 = 118020^2 + 135872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9356814 + ... + 9360274.

Almost surely, 2^32389920784 is an apocalyptic number.

32389920784 is the 179972-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32389920784

32389920784 is an abundant number, since it is smaller than the sum of its proper divisors (35583868775).

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

32389920784 is an frugal number, since it uses more digits than its factorization.

32389920784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956 (or 3476 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 32389920784 in words is "thirty-two billion, three hundred eighty-nine million, nine hundred twenty thousand, seven hundred eighty-four".