216061912 has 32 divisors (see below), whose sum is σ = 442595520. Its totient is φ = 98065440.

The previous prime is 216061897. The next prime is 216061913. The reversal of 216061912 is 219160612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216061913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78463 + ... + 81169.

It is an arithmetic number, because the mean of its divisors is an integer number (13831110).

Almost surely, 2^216061912 is an apocalyptic number.

216061912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216061912 is an abundant number, since it is smaller than the sum of its proper divisors (226533608).

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

216061912 is a wasteful number, since it uses less digits than its factorization.

216061912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 216061912 is about 14699.0445948028. The cubic root of 216061912 is about 600.0573204497.

The spelling of 216061912 in words is "two hundred sixteen million, sixty-one thousand, nine hundred twelve".