28897851796 has 24 divisors (see below), whose sum is σ = 55788505920. Its totient is φ = 12987796800.

The previous prime is 28897851779. The next prime is 28897851799. The reversal of 28897851796 is 69715879882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28897851799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685800 + ... + 3693631.

It is an arithmetic number, because the mean of its divisors is an integer number (2324521080).

Almost surely, 2^28897851796 is an apocalyptic number.

It is an amenable number.

28897851796 is a deficient number, since it is larger than the sum of its proper divisors (26890654124).

28897851796 is a wasteful number, since it uses less digits than its factorization.

28897851796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379535 (or 7379533 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 70.

The spelling of 28897851796 in words is "twenty-eight billion, eight hundred ninety-seven million, eight hundred fifty-one thousand, seven hundred ninety-six".