213760244 has 12 divisors (see below), whose sum is σ = 396085284. Its totient is φ = 100593024.

The previous prime is 213760243. The next prime is 213760273. The reversal of 213760244 is 442067312.

It can be written as a sum of positive squares in 2 ways, for example, as 201072400 + 12687844 = 14180^2 + 3562^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213760243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571699 + ... + 1571834.

It is an arithmetic number, because the mean of its divisors is an integer number (33007107).

Almost surely, 2^213760244 is an apocalyptic number.

It is an amenable number.

213760244 is a deficient number, since it is larger than the sum of its proper divisors (182325040).

213760244 is a wasteful number, since it uses less digits than its factorization.

213760244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143554 (or 3143552 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 213760244 is about 14620.5418504240. The cubic root of 213760244 is about 597.9189421942.

The spelling of 213760244 in words is "two hundred thirteen million, seven hundred sixty thousand, two hundred forty-four".