899835728 has 80 divisors (see below), whose sum is σ = 1947893184. Its totient is φ = 399252480.

The previous prime is 899835719. The next prime is 899835731. The reversal of 899835728 is 827538998.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1615226 + ... + 1615782.

Almost surely, 2^899835728 is an apocalyptic number.

899835728 is a gapful number since it is divisible by the number (88) 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 899835728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973946592).

899835728 is an abundant number, since it is smaller than the sum of its proper divisors (1048057456).

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

899835728 is a wasteful number, since it uses less digits than its factorization.

899835728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 774 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 59.

The square root of 899835728 is about 29997.2620083900. The cubic root of 899835728 is about 965.4306392268.

The spelling of 899835728 in words is "eight hundred ninety-nine million, eight hundred thirty-five thousand, seven hundred twenty-eight".