216900180 has 240 divisors, whose sum is σ = 804013056. Its totient is φ = 47900160.

The previous prime is 216900163. The next prime is 216900191. The reversal of 216900180 is 81009612.

216900180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 351232 + ... + 351848.

Almost surely, 2^216900180 is an apocalyptic number.

216900180 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 216900180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402006528).

216900180 is an abundant number, since it is smaller than the sum of its proper divisors (587112876).

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

216900180 is a wasteful number, since it uses less digits than its factorization.

216900180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 665 counting only the distinct ones).

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

The square root of 216900180 is about 14727.5313613654. The cubic root of 216900180 is about 600.8323448029.

Adding to 216900180 its reverse (81009612), we get a palindrome (297909792).

The spelling of 216900180 in words is "two hundred sixteen million, nine hundred thousand, one hundred eighty".