217412936 has 16 divisors (see below), whose sum is σ = 439007100. Its totient is φ = 100344384.

The previous prime is 217412917. The next prime is 217412957. The reversal of 217412936 is 639214712.

217412936 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 201810436 + 15602500 = 14206^2 + 3950^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 217412896 and 217412905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045151 + ... + 1045358.

Almost surely, 2^217412936 is an apocalyptic number.

217412936 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

217412936 is an abundant number, since it is smaller than the sum of its proper divisors (221594164).

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

217412936 is a wasteful number, since it uses less digits than its factorization.

217412936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090528 (or 2090524 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 217412936 is about 14744.9291622578. The cubic root of 217412936 is about 601.3054317607.

The spelling of 217412936 in words is "two hundred seventeen million, four hundred twelve thousand, nine hundred thirty-six".