217048 has 16 divisors (see below), whose sum is σ = 438480. Its totient is φ = 100128.

The previous prime is 217033. The next prime is 217057. The reversal of 217048 is 840712.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (27405).

2²¹⁷⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

217048 is an abundant number, since it is smaller than the sum of its proper divisors (221432).

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

217048 is a wasteful number, since it uses less digits than its factorization.

217048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106 (or 2102 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 217048 is about 465.8841057602. The cubic root of 217048 is about 60.0968805222.

It can be divided in two parts, 21704 and 8, that added together give a palindrome (21712).

The spelling of 217048 in words is "two hundred seventeen thousand, forty-eight".