16812828920 has 64 divisors (see below), whose sum is σ = 39135916800. Its totient is φ = 6493731840.

The previous prime is 16812828919. The next prime is 16812828979. The reversal of 16812828920 is 2982821861.

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, 551846 + ... + 581514.

It is an arithmetic number, because the mean of its divisors is an integer number (611498700).

Almost surely, 2^16812828920 is an apocalyptic number.

16812828920 is a gapful number since it is divisible by the number (10) 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 16812828920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19567958400).

16812828920 is an abundant number, since it is smaller than the sum of its proper divisors (22323087880).

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

16812828920 is a wasteful number, since it uses less digits than its factorization.

16812828920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30168 (or 30164 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The spelling of 16812828920 in words is "sixteen billion, eight hundred twelve million, eight hundred twenty-eight thousand, nine hundred twenty".