28700219536 has 80 divisors (see below), whose sum is σ = 61589808000. Its totient is φ = 12886759424.

The previous prime is 28700219521. The next prime is 28700219539. The reversal of 28700219536 is 63591200782.

It is a junction number, because it is equal to n+sod(n) for n = 28700219492 and 28700219501.

It is not an unprimeable number, because it can be changed into a prime (28700219539) 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, 2615790 + ... + 2626738.

It is an arithmetic number, because the mean of its divisors is an integer number (769872600).

Almost surely, 2^28700219536 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 28700219536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30794904000).

28700219536 is an abundant number, since it is smaller than the sum of its proper divisors (32889588464).

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

28700219536 is a wasteful number, since it uses less digits than its factorization.

28700219536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11416 (or 11410 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 28700219536 in words is "twenty-eight billion, seven hundred million, two hundred nineteen thousand, five hundred thirty-six".