213900582 has 48 divisors (see below), whose sum is σ = 505120320. Its totient is φ = 60196752.

The previous prime is 213900581. The next prime is 213900601. The reversal of 213900582 is 285009312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213900581) 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, 14269 + ... + 25127.

It is an arithmetic number, because the mean of its divisors is an integer number (10523340).

Almost surely, 2^213900582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213900582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252560160).

213900582 is an abundant number, since it is smaller than the sum of its proper divisors (291219738).

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

213900582 is a wasteful number, since it uses less digits than its factorization.

213900582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10945 (or 10938 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 213900582 is about 14625.3404062948. The cubic root of 213900582 is about 598.0497622672.

Adding to 213900582 its reverse (285009312), we get a palindrome (498909894).

The spelling of 213900582 in words is "two hundred thirteen million, nine hundred thousand, five hundred eighty-two".