503956728 has 96 divisors (see below), whose sum is σ = 1544175360. Its totient is φ = 152707680.

The previous prime is 503956727. The next prime is 503956729. The reversal of 503956728 is 827659305.

It is a happy number.

503956728 is a `hidden beast` number, since 50 + 39 + 567 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (503956727) and next prime (503956729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503956727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9601 + ... + 33167.

It is an arithmetic number, because the mean of its divisors is an integer number (16085160).

Almost surely, 2^503956728 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 503956728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772087680).

503956728 is an abundant number, since it is smaller than the sum of its proper divisors (1040218632).

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

503956728 is a wasteful number, since it uses less digits than its factorization.

503956728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23599 (or 23583 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 503956728 is about 22448.9805559183. The cubic root of 503956728 is about 795.7886655619.

The spelling of 503956728 in words is "five hundred three million, nine hundred fifty-six thousand, seven hundred twenty-eight".