216035140 has 48 divisors (see below), whose sum is σ = 461547072. Its totient is φ = 84928896.

The previous prime is 216035117. The next prime is 216035161. The reversal of 216035140 is 41530612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335659 + ... + 336301.

It is an arithmetic number, because the mean of its divisors is an integer number (9615564).

Almost surely, 2^216035140 is an apocalyptic number.

216035140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216035140 is an abundant number, since it is smaller than the sum of its proper divisors (245511932).

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

216035140 is a wasteful number, since it uses less digits than its factorization.

216035140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 216035140 is about 14698.1338951583. The cubic root of 216035140 is about 600.0325352728.

Adding to 216035140 its reverse (41530612), we get a palindrome (257565752).

The spelling of 216035140 in words is "two hundred sixteen million, thirty-five thousand, one hundred forty".