428508814 has 16 divisors (see below), whose sum is σ = 693839520. Its totient is φ = 197871520.

The previous prime is 428508811. The next prime is 428508841. The reversal of 428508814 is 418805824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428508811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159277 + ... + 161944.

It is an arithmetic number, because the mean of its divisors is an integer number (43364970).

Almost surely, 2^428508814 is an apocalyptic number.

428508814 is a deficient number, since it is larger than the sum of its proper divisors (265330706).

428508814 is a wasteful number, since it uses less digits than its factorization.

428508814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321275.

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 428508814 is about 20700.4544394562. The cubic root of 428508814 is about 753.9107219329.

The spelling of 428508814 in words is "four hundred twenty-eight million, five hundred eight thousand, eight hundred fourteen".