428646463 has 12 divisors (see below), whose sum is σ = 502563072. Its totient is φ = 364512960.

The previous prime is 428646433. The next prime is 428646509. The reversal of 428646463 is 364646824.

It is a de Polignac number, because none of the positive numbers 2^k-428646463 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 (428646433) 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, 28218 + ... + 40663.

It is an arithmetic number, because the mean of its divisors is an integer number (41880256).

Almost surely, 2^428646463 is an apocalyptic number.

428646463 is a deficient number, since it is larger than the sum of its proper divisors (73916609).

428646463 is a wasteful number, since it uses less digits than its factorization.

428646463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69022 (or 69015 counting only the distinct ones).

The product of its digits is 663552, while the sum is 43.

The square root of 428646463 is about 20703.7789545774. The cubic root of 428646463 is about 753.9914390180.

The spelling of 428646463 in words is "four hundred twenty-eight million, six hundred forty-six thousand, four hundred sixty-three".