213249328 has 20 divisors (see below), whose sum is σ = 414193480. Its totient is φ = 106360704.

The previous prime is 213249319. The next prime is 213249347. The reversal of 213249328 is 823942312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213249293 and 213249302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9750 + ... + 22837.

It is an arithmetic number, because the mean of its divisors is an integer number (20709674).

Almost surely, 2^213249328 is an apocalyptic number.

It is an amenable number.

213249328 is a deficient number, since it is larger than the sum of its proper divisors (200944152).

213249328 is a wasteful number, since it uses less digits than its factorization.

213249328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33004 (or 32998 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 213249328 is about 14603.0588576503. The cubic root of 213249328 is about 597.4421930151.

The spelling of 213249328 in words is "two hundred thirteen million, two hundred forty-nine thousand, three hundred twenty-eight".