215068992 has 56 divisors (see below), whose sum is σ = 581168256. Its totient is φ = 70161408.

The previous prime is 215068991. The next prime is 215068993. The reversal of 215068992 is 299860512.

It is an interprime number because it is at equal distance from previous prime (215068991) and next prime (215068993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215068991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2893 + ... + 20940.

Almost surely, 2^215068992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215068992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290584128).

215068992 is an abundant number, since it is smaller than the sum of its proper divisors (366099264).

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

215068992 is a wasteful number, since it uses less digits than its factorization.

215068992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23895 (or 23885 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 215068992 is about 14665.2307175850. The cubic root of 215068992 is about 599.1367140469.

The spelling of 215068992 in words is "two hundred fifteen million, sixty-eight thousand, nine hundred ninety-two".