428426871 has 8 divisors (see below), whose sum is σ = 572962944. Its totient is φ = 284754360.

The previous prime is 428426863. The next prime is 428426891. The reversal of 428426871 is 178624824.

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

It is not a de Polignac number, because 428426871 - 2³ = 428426863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428426891) 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, 214731 + ... + 216716.

It is an arithmetic number, because the mean of its divisors is an integer number (71620368).

Almost surely, 2^428426871 is an apocalyptic number.

428426871 is a deficient number, since it is larger than the sum of its proper divisors (144536073).

428426871 is a wasteful number, since it uses less digits than its factorization.

428426871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431781.

The product of its digits is 172032, while the sum is 42.

The square root of 428426871 is about 20698.4750887596. The cubic root of 428426871 is about 753.8626625212.

The spelling of 428426871 in words is "four hundred twenty-eight million, four hundred twenty-six thousand, eight hundred seventy-one".