213228849 has 16 divisors (see below), whose sum is σ = 302182400. Its totient is φ = 133359696.

The previous prime is 213228779. The next prime is 213228859. The reversal of 213228849 is 948822312.

It is not a de Polignac number, because 213228849 - 2⁷ = 213228721 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213228859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12289 + ... + 24030.

It is an arithmetic number, because the mean of its divisors is an integer number (18886400).

Almost surely, 2^213228849 is an apocalyptic number.

It is an amenable number.

213228849 is a deficient number, since it is larger than the sum of its proper divisors (88953551).

213228849 is a wasteful number, since it uses less digits than its factorization.

213228849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36444.

The product of its digits is 55296, while the sum is 39.

The square root of 213228849 is about 14602.3576521054. The cubic root of 213228849 is about 597.4230676553.

The spelling of 213228849 in words is "two hundred thirteen million, two hundred twenty-eight thousand, eight hundred forty-nine".