502438 has 4 divisors (see below), whose sum is σ = 753660. Its totient is φ = 251218.

The previous prime is 502429. The next prime is 502441. The reversal of 502438 is 834205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834205 = 5 ⋅166841.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 125608 + ... + 125611.

It is an arithmetic number, because the mean of its divisors is an integer number (188415).

2⁵⁰²⁴³⁸ is an apocalyptic number.

502438 is a deficient number, since it is larger than the sum of its proper divisors (251222).

502438 is a wasteful number, since it uses less digits than its factorization.

502438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251221.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 502438 is about 708.8286111607. The cubic root of 502438 is about 79.4988462842.

The spelling of 502438 in words is "five hundred two thousand, four hundred thirty-eight".