28716513837 has 16 divisors (see below), whose sum is σ = 41776230720. Its totient is φ = 17401132800.

The previous prime is 28716513823. The next prime is 28716513877. The reversal of 28716513837 is 73831561782.

It is not a de Polignac number, because 28716513837 - 2¹⁶ = 28716448301 is a prime.

It is a super-2 number, since 2×28716513837² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28716513837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28716513877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146739 + ... + 281007.

It is an arithmetic number, because the mean of its divisors is an integer number (2611014420).

Almost surely, 2^28716513837 is an apocalyptic number.

It is an amenable number.

28716513837 is a deficient number, since it is larger than the sum of its proper divisors (13059716883).

28716513837 is a wasteful number, since it uses less digits than its factorization.

28716513837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140764.

The product of its digits is 1693440, while the sum is 51.

The spelling of 28716513837 in words is "twenty-eight billion, seven hundred sixteen million, five hundred thirteen thousand, eight hundred thirty-seven".