428703807 has 32 divisors (see below), whose sum is σ = 697876992. Its totient is φ = 228501504.

The previous prime is 428703797. The next prime is 428703809. The reversal of 428703807 is 708307824.

It is not a de Polignac number, because 428703807 - 2¹⁵ = 428671039 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428703809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35028 + ... + 45654.

It is an arithmetic number, because the mean of its divisors is an integer number (21808656).

Almost surely, 2^428703807 is an apocalyptic number.

428703807 is a deficient number, since it is larger than the sum of its proper divisors (269173185).

428703807 is a wasteful number, since it uses less digits than its factorization.

428703807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 428703807 is about 20705.1637762178. The cubic root of 428703807 is about 754.0250603204.

The spelling of 428703807 in words is "four hundred twenty-eight million, seven hundred three thousand, eight hundred seven".