217480264 has 16 divisors (see below), whose sum is σ = 408463020. Its totient is φ = 108556800.

The previous prime is 217480247. The next prime is 217480267. The reversal of 217480264 is 462084712.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 167495364 + 49984900 = 12942^2 + 7070^2 .

It is not an unprimeable number, because it can be changed into a prime (217480267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17809 + ... + 27424.

Almost surely, 2^217480264 is an apocalyptic number.

It is an amenable number.

217480264 is a deficient number, since it is larger than the sum of its proper divisors (190982756).

217480264 is a wasteful number, since it uses less digits than its factorization.

217480264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45840 (or 45836 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 217480264 is about 14747.2120755077. The cubic root of 217480264 is about 601.3674957061.

The spelling of 217480264 in words is "two hundred seventeen million, four hundred eighty thousand, two hundred sixty-four".