28797485918 has 4 divisors (see below), whose sum is σ = 43196228880. Its totient is φ = 14398742958.

The previous prime is 28797485917. The next prime is 28797485939. The reversal of 28797485918 is 81958479782.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28797485917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7199371478 + ... + 7199371481.

It is an arithmetic number, because the mean of its divisors is an integer number (10799057220).

Almost surely, 2^28797485918 is an apocalyptic number.

28797485918 is a deficient number, since it is larger than the sum of its proper divisors (14398742962).

28797485918 is a wasteful number, since it uses less digits than its factorization.

28797485918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398742961.

The product of its digits is 81285120, while the sum is 68.

The spelling of 28797485918 in words is "twenty-eight billion, seven hundred ninety-seven million, four hundred eighty-five thousand, nine hundred eighteen".