508481428 has 72 divisors (see below), whose sum is σ = 1121512392. Its totient is φ = 199938816.

The previous prime is 508481419. The next prime is 508481431. The reversal of 508481428 is 824184805.

It can be written as a sum of positive squares in 4 ways, for example, as 11102224 + 497379204 = 3332^2 + 22302^2 .

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 501450 + ... + 502462.

It is an arithmetic number, because the mean of its divisors is an integer number (15576561).

Almost surely, 2^508481428 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 508481428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560756196).

508481428 is an abundant number, since it is smaller than the sum of its proper divisors (613030964).

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

508481428 is a wasteful number, since it uses less digits than its factorization.

508481428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 508481428 is about 22549.5327667781. The cubic root of 508481428 is about 798.1631963347.

The spelling of 508481428 in words is "five hundred eight million, four hundred eighty-one thousand, four hundred twenty-eight".