216596140 has 48 divisors (see below), whose sum is σ = 461946240. Its totient is φ = 85299200.

The previous prime is 216596131. The next prime is 216596197. The reversal of 216596140 is 41695612.

It is a junction number, because it is equal to n+sod(n) for n = 216596096 and 216596105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539940 + ... + 540340.

It is an arithmetic number, because the mean of its divisors is an integer number (9623880).

Almost surely, 2^216596140 is an apocalyptic number.

216596140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216596140 is an abundant number, since it is smaller than the sum of its proper divisors (245350100).

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

216596140 is a wasteful number, since it uses less digits than its factorization.

216596140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 216596140 is about 14717.2055771468. The cubic root of 216596140 is about 600.5514744527.

The spelling of 216596140 in words is "two hundred sixteen million, five hundred ninety-six thousand, one hundred forty".