213006724 has 18 divisors (see below), whose sum is σ = 433621230. Its totient is φ = 91288512.

The previous prime is 213006721. The next prime is 213006733. The reversal of 213006724 is 427600312.

It can be written as a sum of positive squares in only one way, i.e., 163021824 + 49984900 = 12768^2 + 7070^2 .

It is not an unprimeable number, because it can be changed into a prime (213006721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 543189 + ... + 543580.

Almost surely, 2^213006724 is an apocalyptic number.

It is an amenable number.

213006724 is an abundant number, since it is smaller than the sum of its proper divisors (220614506).

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

213006724 is a wasteful number, since it uses less digits than its factorization.

213006724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086787 (or 1086778 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 213006724 is about 14594.7498779527. The cubic root of 213006724 is about 597.2155461655.

The spelling of 213006724 in words is "two hundred thirteen million, six thousand, seven hundred twenty-four".