28015944853 has 8 divisors (see below), whose sum is σ = 30447817400. Its totient is φ = 25623615168.

The previous prime is 28015944839. The next prime is 28015944907. The reversal of 28015944853 is 35844951082.

It can be written as a sum of positive squares in 4 ways, for example, as 3705522129 + 24310422724 = 60873^2 + 155918^2 .

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 28015944853 - 2²⁵ = 27982390421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28015944797 and 28015944806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28015942853) 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, 9884238 + ... + 9887071.

It is an arithmetic number, because the mean of its divisors is an integer number (3805977175).

Almost surely, 2^28015944853 is an apocalyptic number.

It is an amenable number.

28015944853 is a deficient number, since it is larger than the sum of its proper divisors (2431872547).

28015944853 is a wasteful number, since it uses less digits than its factorization.

28015944853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19771431.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 28015944853 in words is "twenty-eight billion, fifteen million, nine hundred forty-four thousand, eight hundred fifty-three".