212388 has 24 divisors (see below), whose sum is σ = 540960. Its totient is φ = 64320.

The previous prime is 212383. The next prime is 212411. The reversal of 212388 is 883212.

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 212388.

It is not an unprimeable number, because it can be changed into a prime (212383) by changing a digit.

212388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673 + ... + 936.

It is an arithmetic number, because the mean of its divisors is an integer number (22540).

2²¹²³⁸⁸ is an apocalyptic number.

It is an amenable number.

212388 is an abundant number, since it is smaller than the sum of its proper divisors (328572).

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

212388 is a wasteful number, since it uses less digits than its factorization.

212388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1625 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 212388 is about 460.8557257971. The cubic root of 212388 is about 59.6636738232.

It can be divided in two parts, 2123 and 88, that added together give a triangular number (2211 = T₆₆).

The spelling of 212388 in words is "two hundred twelve thousand, three hundred eighty-eight".