428501584 has 20 divisors (see below), whose sum is σ = 948825184. Its totient is φ = 183643488.

The previous prime is 428501533. The next prime is 428501587. The reversal of 428501584 is 485105824.

It is a super-2 number, since 2×428501584² = 367227214981018112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428501587) 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, 1912842 + ... + 1913065.

Almost surely, 2^428501584 is an apocalyptic number.

It is an amenable number.

428501584 is an abundant number, since it is smaller than the sum of its proper divisors (520323600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428501584 is a wasteful number, since it uses less digits than its factorization.

428501584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825922 (or 3825916 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 428501584 is about 20700.2798048722. The cubic root of 428501584 is about 753.9064817983.

It can be divided in two parts, 42 and 8501584, that added together give a triangular number (8501626 = T₄₁₂₃).

The spelling of 428501584 in words is "four hundred twenty-eight million, five hundred one thousand, five hundred eighty-four".