428646214 has 4 divisors (see below), whose sum is σ = 642969324. Its totient is φ = 214323106.

The previous prime is 428646133. The next prime is 428646227. The reversal of 428646214 is 412646824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107161552 + ... + 107161555.

It is an arithmetic number, because the mean of its divisors is an integer number (160742331).

Almost surely, 2^428646214 is an apocalyptic number.

428646214 is a deficient number, since it is larger than the sum of its proper divisors (214323110).

428646214 is a wasteful number, since it uses less digits than its factorization.

428646214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214323109.

The product of its digits is 73728, while the sum is 37.

The square root of 428646214 is about 20703.7729411815. The cubic root of 428646214 is about 753.9912930205.

The spelling of 428646214 in words is "four hundred twenty-eight million, six hundred forty-six thousand, two hundred fourteen".