28449486436 has 36 divisors (see below), whose sum is σ = 57925077168. Its totient is φ = 12190521168.

The previous prime is 28449486421. The next prime is 28449486437. The reversal of 28449486436 is 63468494482.

It is not an unprimeable number, because it can be changed into a prime (28449486437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1740775 + ... + 1757041.

Almost surely, 2^28449486436 is an apocalyptic number.

It is an amenable number.

28449486436 is an abundant number, since it is smaller than the sum of its proper divisors (29475590732).

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

28449486436 is a wasteful number, since it uses less digits than its factorization.

28449486436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25208 (or 25199 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 58.

The spelling of 28449486436 in words is "twenty-eight billion, four hundred forty-nine million, four hundred eighty-six thousand, four hundred thirty-six".