28099599700 has 72 divisors (see below), whose sum is σ = 66256037120. Its totient is φ = 10304755200.

The previous prime is 28099599617. The next prime is 28099599701. The reversal of 28099599700 is 799599082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28099599701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179637 + ... + 297436.

Almost surely, 2^28099599700 is an apocalyptic number.

28099599700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28099599700 is an abundant number, since it is smaller than the sum of its proper divisors (38156437420).

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

28099599700 is a wasteful number, since it uses less digits than its factorization.

28099599700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477137 (or 477130 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 58.

The spelling of 28099599700 in words is "twenty-eight billion, ninety-nine million, five hundred ninety-nine thousand, seven hundred".