32728380272 has 60 divisors (see below), whose sum is σ = 73872064296. Its totient is φ = 14005918080.

The previous prime is 32728380259. The next prime is 32728380317. The reversal of 32728380272 is 27208382723.

It is a super-2 number, since 2×32728380272² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511538 + ... + 571950.

Almost surely, 2^32728380272 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 32728380272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36936032148).

32728380272 is an abundant number, since it is smaller than the sum of its proper divisors (41143684024).

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

32728380272 is a wasteful number, since it uses less digits than its factorization.

32728380272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61126 (or 61113 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 32728380272 in words is "thirty-two billion, seven hundred twenty-eight million, three hundred eighty thousand, two hundred seventy-two".