428658813 has 24 divisors (see below), whose sum is σ = 691943616. Its totient is φ = 253454400.

The previous prime is 428658779. The next prime is 428658871. The reversal of 428658813 is 318856824.

It is not a de Polignac number, because 428658813 - 2⁶ = 428658749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428658883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48745 + ... + 56862.

It is an arithmetic number, because the mean of its divisors is an integer number (28830984).

Almost surely, 2^428658813 is an apocalyptic number.

It is an amenable number.

428658813 is a deficient number, since it is larger than the sum of its proper divisors (263284803).

428658813 is a wasteful number, since it uses less digits than its factorization.

428658813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105665 (or 105662 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 428658813 is about 20704.0772071590. The cubic root of 428658813 is about 753.9986801873.

The spelling of 428658813 in words is "four hundred twenty-eight million, six hundred fifty-eight thousand, eight hundred thirteen".