501428 has 12 divisors (see below), whose sum is σ = 891072. Its totient is φ = 246840.

The previous prime is 501427. The next prime is 501451. The reversal of 501428 is 824105.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 501428.

It is not an unprimeable number, because it can be changed into a prime (501427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (74256).

2⁵⁰¹⁴²⁸ is an apocalyptic number.

It is an amenable number.

501428 is a deficient number, since it is larger than the sum of its proper divisors (389644).

501428 is a wasteful number, since it uses less digits than its factorization.

501428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 501428 is about 708.1158097374. The cubic root of 501428 is about 79.4455410690.

It can be divided in two parts, 501 and 428, that added together give a palindrome (929).

The spelling of 501428 in words is "five hundred one thousand, four hundred twenty-eight".