213020532 has 72 divisors (see below), whose sum is σ = 547747200. Its totient is φ = 69796800.

The previous prime is 213020531. The next prime is 213020551. The reversal of 213020532 is 235020312.

213020532 is a `hidden beast` number, since 2 + 130 + 2 + 0 + 532 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020531) 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, 809833 + ... + 810095.

It is an arithmetic number, because the mean of its divisors is an integer number (7607600).

Almost surely, 2^213020532 is an apocalyptic number.

It is an amenable number.

213020532 is an abundant number, since it is smaller than the sum of its proper divisors (334726668).

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

213020532 is a wasteful number, since it uses less digits than its factorization.

213020532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 213020532 is about 14595.2229171054. Note that the first 3 decimals coincide. The cubic root of 213020532 is about 597.2284505689.

Adding to 213020532 its reverse (235020312), we get a palindrome (448040844).

The spelling of 213020532 in words is "two hundred thirteen million, twenty thousand, five hundred thirty-two".