28636884338 has 8 divisors (see below), whose sum is σ = 42963832560. Its totient is φ = 14315606820.

The previous prime is 28636884323. The next prime is 28636884343. The reversal of 28636884338 is 83348863682.

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

It is a super-2 number, since 2×28636884338² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1405028 + ... + 1425263.

It is an arithmetic number, because the mean of its divisors is an integer number (5370479070).

Almost surely, 2^28636884338 is an apocalyptic number.

28636884338 is a deficient number, since it is larger than the sum of its proper divisors (14326948222).

28636884338 is a wasteful number, since it uses less digits than its factorization.

28636884338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835352.

The product of its digits is 31850496, while the sum is 59.

The spelling of 28636884338 in words is "twenty-eight billion, six hundred thirty-six million, eight hundred eighty-four thousand, three hundred thirty-eight".