216702100 has 18 divisors (see below), whose sum is σ = 470243774. Its totient is φ = 86680800.

The previous prime is 216702089. The next prime is 216702131. The reversal of 216702100 is 1207612.

216702100 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2782224 + 213919876 = 1668^2 + 14626^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1083411 + ... + 1083610.

Almost surely, 2^216702100 is an apocalyptic number.

216702100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216702100 is an abundant number, since it is smaller than the sum of its proper divisors (253541674).

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

216702100 is a wasteful number, since it uses less digits than its factorization.

216702100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167035 (or 2167028 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 216702100 is about 14720.8050051619. The cubic root of 216702100 is about 600.6493894945.

Adding to 216702100 its reverse (1207612), we get a palindrome (217909712).

The spelling of 216702100 in words is "two hundred sixteen million, seven hundred two thousand, one hundred".