216100500 has 192 divisors, whose sum is σ = 784982016. Its totient is φ = 44880000.

The previous prime is 216100487. The next prime is 216100523. The reversal of 216100500 is 5001612.

216100500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216100500² = 93398852200500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 216100500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114565 + ... + 116435.

It is an arithmetic number, because the mean of its divisors is an integer number (4088448).

Almost surely, 2^216100500 is an apocalyptic number.

216100500 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 216100500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392491008).

216100500 is an abundant number, since it is smaller than the sum of its proper divisors (568881516).

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

216100500 is a wasteful number, since it uses less digits than its factorization.

216100500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 216100500 is about 14700.3571385188. The cubic root of 216100500 is about 600.0930411271.

The spelling of 216100500 in words is "two hundred sixteen million, one hundred thousand, five hundred".