28438608016 has 40 divisors (see below), whose sum is σ = 67815145664. Its totient is φ = 11250437760.

The previous prime is 28438608007. The next prime is 28438608047. The reversal of 28438608016 is 61080683482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9764550 + ... + 9767461.

Almost surely, 2^28438608016 is an apocalyptic number.

28438608016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28438608016 is an abundant number, since it is smaller than the sum of its proper divisors (39376537648).

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

28438608016 is a wasteful number, since it uses less digits than its factorization.

28438608016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19532039 (or 19532033 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 28438608016 in words is "twenty-eight billion, four hundred thirty-eight million, six hundred eight thousand, sixteen".