213236452 has 48 divisors (see below), whose sum is σ = 442862784. Its totient is φ = 88560000.

The previous prime is 213236407. The next prime is 213236453. The reversal of 213236452 is 254632312.

It is a self number, because there is not a number n which added to its sum of digits gives 213236452.

It is not an unprimeable number, because it can be changed into a prime (213236453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55927 + ... + 59617.

It is an arithmetic number, because the mean of its divisors is an integer number (9226308).

Almost surely, 2^213236452 is an apocalyptic number.

213236452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213236452 is an abundant number, since it is smaller than the sum of its proper divisors (229626332).

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

213236452 is a wasteful number, since it uses less digits than its factorization.

213236452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820 (or 3818 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 213236452 is about 14602.6179844574. The cubic root of 213236452 is about 597.4301682480.

Adding to 213236452 its reverse (254632312), we get a palindrome (467868764).

The spelling of 213236452 in words is "two hundred thirteen million, two hundred thirty-six thousand, four hundred fifty-two".