217013948 has 24 divisors (see below), whose sum is σ = 393550080. Its totient is φ = 104635440.

The previous prime is 217013939. The next prime is 217013957. The reversal of 217013948 is 849310712.

It is an interprime number because it is at equal distance from previous prime (217013939) and next prime (217013957).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5603 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (16397920).

Almost surely, 2^217013948 is an apocalyptic number.

It is an amenable number.

217013948 is a deficient number, since it is larger than the sum of its proper divisors (176536132).

217013948 is a wasteful number, since it uses less digits than its factorization.

217013948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16097 (or 16095 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 217013948 is about 14731.3932810172. The cubic root of 217013948 is about 600.9373755233.

The spelling of 217013948 in words is "two hundred seventeen million, thirteen thousand, nine hundred forty-eight".