213603216 has 80 divisors (see below), whose sum is σ = 564071040. Its totient is φ = 69637120.

The previous prime is 213603193. The next prime is 213603223. The reversal of 213603216 is 612306312.

It is a happy number.

213603216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793930 + ... + 794198.

It is an arithmetic number, because the mean of its divisors is an integer number (7050888).

Almost surely, 2^213603216 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 213603216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282035520).

213603216 is an abundant number, since it is smaller than the sum of its proper divisors (350467824).

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

213603216 is a wasteful number, since it uses less digits than its factorization.

213603216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 213603216 is about 14615.1707482328. The cubic root of 213603216 is about 597.7724961670.

Adding to 213603216 its reverse (612306312), we get a palindrome (825909528).

The spelling of 213603216 in words is "two hundred thirteen million, six hundred three thousand, two hundred sixteen".