216280800 has 576 divisors, whose sum is σ = 899942400. Its totient is φ = 49766400.

The previous prime is 216280789. The next prime is 216280837. The reversal of 216280800 is 8082612.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6976785 + ... + 6976815.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^216280800 is an apocalyptic number.

216280800 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 216280800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449971200).

216280800 is an abundant number, since it is smaller than the sum of its proper divisors (683661600).

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

216280800 is a wasteful number, since it uses less digits than its factorization.

216280800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 216280800 is about 14706.4883639841. The cubic root of 216280800 is about 600.2598874146.

The spelling of 216280800 in words is "two hundred sixteen million, two hundred eighty thousand, eight hundred".