28532382731 has 8 divisors (see below), whose sum is σ = 29142457344. Its totient is φ = 27922433320.

The previous prime is 28532382691. The next prime is 28532382751. The reversal of 28532382731 is 13728323582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28532382731 - 2¹⁰ = 28532381707 is a prime.

It is a super-4 number, since 4×28532382731⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28532382751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539246 + ... + 589788.

It is an arithmetic number, because the mean of its divisors is an integer number (3642807168).

Almost surely, 2^28532382731 is an apocalyptic number.

28532382731 is a deficient number, since it is larger than the sum of its proper divisors (610074613).

28532382731 is a wasteful number, since it uses less digits than its factorization.

28532382731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62601.

The product of its digits is 483840, while the sum is 44.

The spelling of 28532382731 in words is "twenty-eight billion, five hundred thirty-two million, three hundred eighty-two thousand, seven hundred thirty-one".