501920256 has 160 divisors (see below), whose sum is σ = 1407909888. Its totient is φ = 158699520.

The previous prime is 501920231. The next prime is 501920273. The reversal of 501920256 is 652029105.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3952065 + ... + 3952191.

Almost surely, 2^501920256 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 501920256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703954944).

501920256 is an abundant number, since it is smaller than the sum of its proper divisors (905989632).

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

501920256 is a wasteful number, since it uses less digits than its factorization.

501920256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 501920256 is about 22403.5768572788. The cubic root of 501920256 is about 794.7153001381.

The spelling of 501920256 in words is "five hundred one million, nine hundred twenty thousand, two hundred fifty-six".