215280871 has 8 divisors (see below), whose sum is σ = 232636320. Its totient is φ = 198039072.

The previous prime is 215280827. The next prime is 215280883. The reversal of 215280871 is 178082512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215280871 - 2²³ = 206892263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215280271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24451 + ... + 32068.

It is an arithmetic number, because the mean of its divisors is an integer number (29079540).

Almost surely, 2^215280871 is an apocalyptic number.

215280871 is a deficient number, since it is larger than the sum of its proper divisors (17355449).

215280871 is a wasteful number, since it uses less digits than its factorization.

215280871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56825.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 215280871 is about 14672.4527942672. The cubic root of 215280871 is about 599.3333994954. Note that the first 4 decimals are identical.

The spelling of 215280871 in words is "two hundred fifteen million, two hundred eighty thousand, eight hundred seventy-one".