520074 has 16 divisors (see below), whose sum is σ = 1155840. Its totient is φ = 173340.

The previous prime is 520073. The next prime is 520103. The reversal of 520074 is 470025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (520073) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4762 + ... + 4869.

It is an arithmetic number, because the mean of its divisors is an integer number (72240).

2⁵²⁰⁰⁷⁴ is an apocalyptic number.

520074 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

520074 is an abundant number, since it is smaller than the sum of its proper divisors (635766).

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

520074 is a wasteful number, since it uses less digits than its factorization.

520074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9642 (or 9636 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 520074 is about 721.1615630356. The cubic root of 520074 is about 80.4183295255.

Adding to 520074 its reverse (470025), we get a palindrome (990099).

The spelling of 520074 in words is "five hundred twenty thousand, seventy-four".