28851696900 has 648 divisors, whose sum is σ = 105065775360. Its totient is φ = 6604416000.

The previous prime is 28851696893. The next prime is 28851696911. The reversal of 28851696900 is 969615882.

It is a happy number.

It is a super-2 number, since 2×28851696900² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 136737795 + ... + 136738005.

Almost surely, 2^28851696900 is an apocalyptic number.

28851696900 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 28851696900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52532887680).

28851696900 is an abundant number, since it is smaller than the sum of its proper divisors (76214078460).

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

28851696900 is a wasteful number, since it uses less digits than its factorization.

28851696900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 28851696900 in words is "twenty-eight billion, eight hundred fifty-one million, six hundred ninety-six thousand, nine hundred".