28080371700 has 216 divisors, whose sum is σ = 94805911200. Its totient is φ = 6928830720.

The previous prime is 28080371689. The next prime is 28080371717. The reversal of 28080371700 is 717308082.

28080371700 is a `hidden beast` number, since 280 + 8 + 0 + 371 + 7 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 716206 + ... + 754394.

Almost surely, 2^28080371700 is an apocalyptic number.

28080371700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28080371700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47402955600).

28080371700 is an abundant number, since it is smaller than the sum of its proper divisors (66725539500).

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

28080371700 is a wasteful number, since it uses less digits than its factorization.

28080371700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38271 (or 38261 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

Adding to 28080371700 its reverse (717308082), we get a palindrome (28797679782).

The spelling of 28080371700 in words is "twenty-eight billion, eighty million, three hundred seventy-one thousand, seven hundred".