213866832 has 20 divisors (see below), whose sum is σ = 552489440. Its totient is φ = 71288928.

The previous prime is 213866803. The next prime is 213866833. The reversal of 213866832 is 238668312.

213866832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213866833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2227732 + ... + 2227827.

It is an arithmetic number, because the mean of its divisors is an integer number (27624472).

Almost surely, 2^213866832 is an apocalyptic number.

It is an amenable number.

213866832 is an abundant number, since it is smaller than the sum of its proper divisors (338622608).

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

213866832 is a wasteful number, since it uses less digits than its factorization.

213866832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455570 (or 4455564 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 213866832 is about 14624.1865414798. The cubic root of 213866832 is about 598.0183064682.

The spelling of 213866832 in words is "two hundred thirteen million, eight hundred sixty-six thousand, eight hundred thirty-two".