428758471 has 4 divisors (see below), whose sum is σ = 428966392. Its totient is φ = 428550552.

The previous prime is 428758459. The next prime is 428758481. The reversal of 428758471 is 174857824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428758471 - 2⁵ = 428758439 is a prime.

It is a super-3 number, since 3×428758471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428758441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100836 + ... + 105001.

It is an arithmetic number, because the mean of its divisors is an integer number (107241598).

Almost surely, 2^428758471 is an apocalyptic number.

428758471 is a deficient number, since it is larger than the sum of its proper divisors (207921).

428758471 is a wasteful number, since it uses less digits than its factorization.

428758471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207920.

The product of its digits is 501760, while the sum is 46.

The square root of 428758471 is about 20706.4837913152. The cubic root of 428758471 is about 754.0571075237.

The spelling of 428758471 in words is "four hundred twenty-eight million, seven hundred fifty-eight thousand, four hundred seventy-one".