501386420 has 24 divisors (see below), whose sum is σ = 1053599400. Its totient is φ = 200423552.

The previous prime is 501386419. The next prime is 501386437. The reversal of 501386420 is 24683105.

It can be written as a sum of positive squares in 4 ways, for example, as 25361296 + 476025124 = 5036^2 + 21818^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26846 + ... + 41514.

It is an arithmetic number, because the mean of its divisors is an integer number (43899975).

Almost surely, 2^501386420 is an apocalyptic number.

It is an amenable number.

501386420 is an abundant number, since it is smaller than the sum of its proper divisors (552212980).

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

501386420 is a wasteful number, since it uses less digits than its factorization.

501386420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16387 (or 16385 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 501386420 is about 22391.6596079880. The cubic root of 501386420 is about 794.4334504956.

The spelling of 501386420 in words is "five hundred one million, three hundred eighty-six thousand, four hundred twenty".