28078117496100 has 108 divisors (see below), whose sum is σ = 100582056475264. Its totient is φ = 6417855426240.

The previous prime is 28078117496087. The next prime is 28078117496123. The reversal of 28078117496100 is 169471187082.

28078117496100 is a `hidden beast` number, since 2 + 8 + 0 + 7 + 8 + 1 + 17 + 4 + 9 + 610 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2228415724 + ... + 2228428323.

Almost surely, 2^{28078117496100} is an apocalyptic number.

28078117496100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28078117496100 is an abundant number, since it is smaller than the sum of its proper divisors (72503938979164).

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

28078117496100 is a wasteful number, since it uses less digits than its factorization.

28078117496100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456844074 (or 4456844064 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 28078117496100 in words is "twenty-eight trillion, seventy-eight billion, one hundred seventeen million, four hundred ninety-six thousand, one hundred".