213544020 has 96 divisors (see below), whose sum is σ = 628645248. Its totient is φ = 54093312.

The previous prime is 213544013. The next prime is 213544033. The reversal of 213544020 is 20445312.

213544020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94342 + ... + 96578.

It is an arithmetic number, because the mean of its divisors is an integer number (6548388).

Almost surely, 2^213544020 is an apocalyptic number.

213544020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213544020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314322624).

213544020 is an abundant number, since it is smaller than the sum of its proper divisors (415101228).

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

213544020 is a wasteful number, since it uses less digits than its factorization.

213544020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 213544020 is about 14613.1454519552. The cubic root of 213544020 is about 597.7172707032.

Adding to 213544020 its reverse (20445312), we get a palindrome (233989332).

The spelling of 213544020 in words is "two hundred thirteen million, five hundred forty-four thousand, twenty".