531748428 has 24 divisors (see below), whose sum is σ = 1241421888. Its totient is φ = 177152976.

The previous prime is 531748409. The next prime is 531748453. The reversal of 531748428 is 824847135.

It is a self number, because there is not a number n which added to its sum of digits gives 531748428.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12975 + ... + 35097.

It is an arithmetic number, because the mean of its divisors is an integer number (51725912).

Almost surely, 2^531748428 is an apocalyptic number.

It is an amenable number.

531748428 is an abundant number, since it is smaller than the sum of its proper divisors (709673460).

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

531748428 is a wasteful number, since it uses less digits than its factorization.

531748428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24133 (or 24131 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 531748428 is about 23059.6710297437. The cubic root of 531748428 is about 810.1561594974.

The spelling of 531748428 in words is "five hundred thirty-one million, seven hundred forty-eight thousand, four hundred twenty-eight".