428444475 has 24 divisors (see below), whose sum is σ = 724840512. Its totient is φ = 223188000.

The previous prime is 428444473. The next prime is 428444477. The reversal of 428444475 is 574444824.

It is an interprime number because it is at equal distance from previous prime (428444473) and next prime (428444477).

It is not a de Polignac number, because 428444475 - 2¹ = 428444473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428444473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63201 + ... + 69650.

It is an arithmetic number, because the mean of its divisors is an integer number (30201688).

Almost surely, 2^428444475 is an apocalyptic number.

428444475 is a deficient number, since it is larger than the sum of its proper divisors (296396037).

428444475 is a wasteful number, since it uses less digits than its factorization.

428444475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132907 (or 132902 counting only the distinct ones).

The product of its digits is 573440, while the sum is 42.

The square root of 428444475 is about 20698.9003331095. The cubic root of 428444475 is about 753.8729877501.

The spelling of 428444475 in words is "four hundred twenty-eight million, four hundred forty-four thousand, four hundred seventy-five".