215041668 has 48 divisors (see below), whose sum is σ = 519450624. Its totient is φ = 69167520.

The previous prime is 215041663. The next prime is 215041681. The reversal of 215041668 is 866140512.

It is not an unprimeable number, because it can be changed into a prime (215041661) 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 15 ways as a sum of consecutive naturals, for example, 180571 + ... + 181757.

It is an arithmetic number, because the mean of its divisors is an integer number (10821888).

Almost surely, 2^215041668 is an apocalyptic number.

It is an amenable number.

215041668 is an abundant number, since it is smaller than the sum of its proper divisors (304408956).

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

215041668 is a wasteful number, since it uses less digits than its factorization.

215041668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 215041668 is about 14664.2990967860. The cubic root of 215041668 is about 599.1113400111. Note that the first 3 decimals are identical.

The spelling of 215041668 in words is "two hundred fifteen million, forty-one thousand, six hundred sixty-eight".