428791 has 8 divisors (see below), whose sum is σ = 495504. Its totient is φ = 366720.

The previous prime is 428777. The next prime is 428797. The reversal of 428791 is 197824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428791 - 2⁵ = 428759 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (61938).

2⁴²⁸⁷⁹¹ is an apocalyptic number.

428791 is a deficient number, since it is larger than the sum of its proper divisors (66713).

428791 is a wasteful number, since it uses less digits than its factorization.

428791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321.

The product of its digits is 4032, while the sum is 31.

The square root of 428791 is about 654.8213496825. The cubic root of 428791 is about 75.4076176615.

The spelling of 428791 in words is "four hundred twenty-eight thousand, seven hundred ninety-one".