217374132 has 12 divisors (see below), whose sum is σ = 507206336. Its totient is φ = 72458040.

The previous prime is 217374103. The next prime is 217374137. The reversal of 217374132 is 231473712.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 217374132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217374137) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9057244 + ... + 9057267.

Almost surely, 2^217374132 is an apocalyptic number.

It is an amenable number.

217374132 is an abundant number, since it is smaller than the sum of its proper divisors (289832204).

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

217374132 is a wasteful number, since it uses less digits than its factorization.

217374132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18114518 (or 18114516 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 217374132 is about 14743.6132613413. The cubic root of 217374132 is about 601.2696558394.

The spelling of 217374132 in words is "two hundred seventeen million, three hundred seventy-four thousand, one hundred thirty-two".