816912000 has 512 divisors, whose sum is σ = 3156940800. Its totient is φ = 207360000.

The previous prime is 816911989. The next prime is 816912001. The reversal of 816912000 is 219618.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816912001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13391970 + ... + 13392030.

It is an arithmetic number, because the mean of its divisors is an integer number (6165900).

Almost surely, 2^816912000 is an apocalyptic number.

816912000 is a gapful number since it is divisible by the number (80) 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 816912000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578470400).

816912000 is an abundant number, since it is smaller than the sum of its proper divisors (2340028800).

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

816912000 is a wasteful number, since it uses less digits than its factorization.

816912000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 816912000 is about 28581.6724493162. The cubic root of 816912000 is about 934.8137503518.

The spelling of 816912000 in words is "eight hundred sixteen million, nine hundred twelve thousand".