216142170 has 16 divisors (see below), whose sum is σ = 518741280. Its totient is φ = 57637904.

The previous prime is 216142169. The next prime is 216142187. The reversal of 216142170 is 71241612.

It is a self number, because there is not a number n which added to its sum of digits gives 216142170.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3602340 + ... + 3602399.

It is an arithmetic number, because the mean of its divisors is an integer number (32421330).

Almost surely, 2^216142170 is an apocalyptic number.

216142170 is an abundant number, since it is smaller than the sum of its proper divisors (302599110).

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

216142170 is a wasteful number, since it uses less digits than its factorization.

216142170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204749.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 216142170 is about 14701.7743827063. The cubic root of 216142170 is about 600.1316100181.

Adding to 216142170 its reverse (71241612), we get a palindrome (287383782).

The spelling of 216142170 in words is "two hundred sixteen million, one hundred forty-two thousand, one hundred seventy".