28802680197 has 4 divisors (see below), whose sum is σ = 38403573600. Its totient is φ = 19201786796.

The previous prime is 28802680171. The next prime is 28802680211. The reversal of 28802680197 is 79108620882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28802680197 - 2²⁷ = 28668462469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28802680147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4800446697 + ... + 4800446702.

It is an arithmetic number, because the mean of its divisors is an integer number (9600893400).

Almost surely, 2^28802680197 is an apocalyptic number.

It is an amenable number.

28802680197 is a deficient number, since it is larger than the sum of its proper divisors (9600893403).

28802680197 is an equidigital number, since it uses as much as digits as its factorization.

28802680197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600893402.

The product of its (nonzero) digits is 774144, while the sum is 51.

The spelling of 28802680197 in words is "twenty-eight billion, eight hundred two million, six hundred eighty thousand, one hundred ninety-seven".