503280840 has 32 divisors (see below), whose sum is σ = 1509842880. Its totient is φ = 134208192.

The previous prime is 503280829. The next prime is 503280851. The reversal of 503280840 is 48082305.

It is an interprime number because it is at equal distance from previous prime (503280829) and next prime (503280851).

It is a super-2 number, since 2×503280840² = 506583207822211200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 503280798 and 503280807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096884 + ... + 2097123.

It is an arithmetic number, because the mean of its divisors is an integer number (47182590).

Almost surely, 2^503280840 is an apocalyptic number.

It is an amenable number.

503280840 is an abundant number, since it is smaller than the sum of its proper divisors (1006562040).

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

503280840 is a wasteful number, since it uses less digits than its factorization.

503280840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194021 (or 4194017 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 503280840 is about 22433.9216366644. The cubic root of 503280840 is about 795.4327456893.

The spelling of 503280840 in words is "five hundred three million, two hundred eighty thousand, eight hundred forty".