502023420 has 144 divisors (see below), whose sum is σ = 1609826400. Its totient is φ = 131279616.

The previous prime is 502023407. The next prime is 502023421. The reversal of 502023420 is 24320205.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 502023393 and 502023402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502023421) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 256606 + ... + 258554.

It is an arithmetic number, because the mean of its divisors is an integer number (11179350).

Almost surely, 2^502023420 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 502023420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804913200).

502023420 is an abundant number, since it is smaller than the sum of its proper divisors (1107802980).

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

502023420 is a wasteful number, since it uses less digits than its factorization.

502023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 502023420 is about 22405.8791391902. The cubic root of 502023420 is about 794.7697446385.

Adding to 502023420 its reverse (24320205), we get a palindrome (526343625).

The spelling of 502023420 in words is "five hundred two million, twenty-three thousand, four hundred twenty".