213244328 has 32 divisors (see below), whose sum is σ = 461842560. Its totient is φ = 91226880.

The previous prime is 213244327. The next prime is 213244331. The reversal of 213244328 is 823442312.

It is a self number, because there is not a number n which added to its sum of digits gives 213244328.

It is not an unprimeable number, because it can be changed into a prime (213244327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69776 + ... + 72767.

It is an arithmetic number, because the mean of its divisors is an integer number (14432580).

Almost surely, 2^213244328 is an apocalyptic number.

It is an amenable number.

213244328 is an abundant number, since it is smaller than the sum of its proper divisors (248598232).

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

213244328 is a wasteful number, since it uses less digits than its factorization.

213244328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142577 (or 142573 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 213244328 is about 14602.8876596377. The cubic root of 213244328 is about 597.4375236228.

It can be divided in two parts, 21324 and 4328, that added together give a palindrome (25652).

The spelling of 213244328 in words is "two hundred thirteen million, two hundred forty-four thousand, three hundred twenty-eight".