213424452 has 72 divisors (see below), whose sum is σ = 565254144. Its totient is φ = 67769856.

The previous prime is 213424451. The next prime is 213424469. The reversal of 213424452 is 254424312.

213424452 is a `hidden beast` number, since 213 + 4 + 2 + 445 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (213424451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316788 + ... + 317460.

It is an arithmetic number, because the mean of its divisors is an integer number (7850752).

Almost surely, 2^213424452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213424452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282627072).

213424452 is an abundant number, since it is smaller than the sum of its proper divisors (351829692).

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

213424452 is a wasteful number, since it uses less digits than its factorization.

213424452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1084 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 213424452 is about 14609.0537681261. The cubic root of 213424452 is about 597.6056915207.

Adding to 213424452 its reverse (254424312), we get a palindrome (467848764).

The spelling of 213424452 in words is "two hundred thirteen million, four hundred twenty-four thousand, four hundred fifty-two".