28493826816 has 144 divisors (see below), whose sum is σ = 93335777024. Its totient is φ = 7514836992.

The previous prime is 28493826761. The next prime is 28493826821. The reversal of 28493826816 is 61862839482.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133966 + ... + 273741.

Almost surely, 2^28493826816 is an apocalyptic number.

28493826816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28493826816 is an abundant number, since it is smaller than the sum of its proper divisors (64841950208).

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

28493826816 is a wasteful number, since it uses less digits than its factorization.

28493826816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407746 (or 407732 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 57.

The spelling of 28493826816 in words is "twenty-eight billion, four hundred ninety-three million, eight hundred twenty-six thousand, eight hundred sixteen".