428806213 has 12 divisors (see below), whose sum is σ = 471837184. Its totient is φ = 389406600.

The previous prime is 428806211. The next prime is 428806253. The reversal of 428806213 is 312608824.

It is not a de Polignac number, because 428806213 - 2¹ = 428806211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428806211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200158 + ... + 202288.

Almost surely, 2^428806213 is an apocalyptic number.

It is an amenable number.

428806213 is a deficient number, since it is larger than the sum of its proper divisors (43030971).

428806213 is a wasteful number, since it uses less digits than its factorization.

428806213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 428806213 is about 20707.6365865349. The cubic root of 428806213 is about 754.0850944213.

The spelling of 428806213 in words is "four hundred twenty-eight million, eight hundred six thousand, two hundred thirteen".