213748 has 6 divisors (see below), whose sum is σ = 374066. Its totient is φ = 106872.

The previous prime is 213737. The next prime is 213751. The reversal of 213748 is 847312.

213748 is digitally balanced in base 2, 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 only one way, i.e., 191844 + 21904 = 438^2 + 148^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26715 + ... + 26722.

2²¹³⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

213748 is a deficient number, since it is larger than the sum of its proper divisors (160318).

213748 is a wasteful number, since it uses less digits than its factorization.

213748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53441 (or 53439 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 213748 is about 462.3288872653. The cubic root of 213748 is about 59.7907525885.

It can be divided in two parts, 213 and 748, that added together give a square (961 = 31²).

The spelling of 213748 in words is "two hundred thirteen thousand, seven hundred forty-eight".