428763267 has 8 divisors (see below), whose sum is σ = 635204880. Its totient is φ = 285842160.

The previous prime is 428763259. The next prime is 428763287. The reversal of 428763267 is 762367824.

428763267 is a `hidden beast` number, since 4 + 2 + 8 + 7 + 632 + 6 + 7 = 666.

It is not a de Polignac number, because 428763267 - 2³ = 428763259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428763287) 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, 7940034 + ... + 7940087.

It is an arithmetic number, because the mean of its divisors is an integer number (79400610).

Almost surely, 2^428763267 is an apocalyptic number.

428763267 is a deficient number, since it is larger than the sum of its proper divisors (206441613).

428763267 is a wasteful number, since it uses less digits than its factorization.

428763267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15880130 (or 15880124 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 428763267 is about 20706.5996001275. The cubic root of 428763267 is about 754.0599190867.

The spelling of 428763267 in words is "four hundred twenty-eight million, seven hundred sixty-three thousand, two hundred sixty-seven".