503342388 has 36 divisors (see below), whose sum is σ = 1284944388. Its totient is φ = 166118400.

The previous prime is 503342387. The next prime is 503342401. The reversal of 503342388 is 883243305.

It can be written as a sum of positive squares in 2 ways, for example, as 496309284 + 7033104 = 22278^2 + 2652^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503342383) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 65581 + ... + 72852.

Almost surely, 2^503342388 is an apocalyptic number.

It is an amenable number.

503342388 is an abundant number, since it is smaller than the sum of its proper divisors (781602000).

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

503342388 is a wasteful number, since it uses less digits than its factorization.

503342388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138544 (or 138539 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 503342388 is about 22435.2933566735. The cubic root of 503342388 is about 795.4651697987.

The spelling of 503342388 in words is "five hundred three million, three hundred forty-two thousand, three hundred eighty-eight".