216142836 has 48 divisors (see below), whose sum is σ = 620721024. Its totient is φ = 57004416.

The previous prime is 216142831. The next prime is 216142867. The reversal of 216142836 is 638241612.

216142836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216142797 and 216142806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216142831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97875 + ... + 100058.

It is an arithmetic number, because the mean of its divisors is an integer number (12931688).

Almost surely, 2^216142836 is an apocalyptic number.

216142836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216142836 is an abundant number, since it is smaller than the sum of its proper divisors (404578188).

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

216142836 is a wasteful number, since it uses less digits than its factorization.

216142836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197960 (or 197958 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 216142836 is about 14701.7970330161. The cubic root of 216142836 is about 600.1322264137.

The spelling of 216142836 in words is "two hundred sixteen million, one hundred forty-two thousand, eight hundred thirty-six".