212738 has 8 divisors (see below), whose sum is σ = 337932. Its totient is φ = 100096.

The previous prime is 212701. The next prime is 212777. The reversal of 212738 is 837212.

212738 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 2 ways, for example, as 165649 + 47089 = 407^2 + 217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 212738.

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, 3095 + ... + 3162.

2²¹²⁷³⁸ is an apocalyptic number.

212738 is a deficient number, since it is larger than the sum of its proper divisors (125194).

212738 is a wasteful number, since it uses less digits than its factorization.

212738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276.

The product of its digits is 672, while the sum is 23.

The square root of 212738 is about 461.2352978687. The cubic root of 212738 is about 59.6964296372.

The spelling of 212738 in words is "two hundred twelve thousand, seven hundred thirty-eight".