428747528 has 96 divisors (see below), whose sum is σ = 921737880. Its totient is φ = 186700800.

The previous prime is 428747479. The next prime is 428747587. The reversal of 428747528 is 825747824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 316768804 + 111978724 = 17798^2 + 10582^2 .

It is a super-2 number, since 2×428747528² = 367648885532221568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3129476 + ... + 3129612.

Almost surely, 2^428747528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428747528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460868940).

428747528 is an abundant number, since it is smaller than the sum of its proper divisors (492990352).

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

428747528 is a wasteful number, since it uses less digits than its factorization.

428747528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 264 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 47.

The square root of 428747528 is about 20706.2195487250. The cubic root of 428747528 is about 754.0506923213.

It can be divided in two parts, 4287 and 47528, that added together give a palindrome (51815).

The spelling of 428747528 in words is "four hundred twenty-eight million, seven hundred forty-seven thousand, five hundred twenty-eight".