216471074 has 8 divisors (see below), whose sum is σ = 326886300. Its totient is φ = 107508976.

The previous prime is 216471071. The next prime is 216471107. The reversal of 216471074 is 470174612.

It can be written as a sum of positive squares in 2 ways, for example, as 208947025 + 7524049 = 14455^2 + 2743^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 216471074.

It is not an unprimeable number, because it can be changed into a prime (216471071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362909 + ... + 363504.

Almost surely, 2^216471074 is an apocalyptic number.

216471074 is a deficient number, since it is larger than the sum of its proper divisors (110415226).

216471074 is a wasteful number, since it uses less digits than its factorization.

216471074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726564.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 216471074 is about 14712.9559912344. The cubic root of 216471074 is about 600.4358629255.

The spelling of 216471074 in words is "two hundred sixteen million, four hundred seventy-one thousand, seventy-four".