215471466 has 24 divisors (see below), whose sum is σ = 533548704. Its totient is φ = 61563240.

The previous prime is 215471449. The next prime is 215471471. The reversal of 215471466 is 664174512.

It is a self number, because there is not a number n which added to its sum of digits gives 215471466.

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 11 ways as a sum of consecutive naturals, for example, 854920 + ... + 855171.

It is an arithmetic number, because the mean of its divisors is an integer number (22231196).

Almost surely, 2^215471466 is an apocalyptic number.

215471466 is an abundant number, since it is smaller than the sum of its proper divisors (318077238).

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

215471466 is a wasteful number, since it uses less digits than its factorization.

215471466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710106 (or 1710103 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 215471466 is about 14678.9463518333. The cubic root of 215471466 is about 599.5102169631.

The spelling of 215471466 in words is "two hundred fifteen million, four hundred seventy-one thousand, four hundred sixty-six".