520873100 has 72 divisors (see below), whose sum is σ = 1237420800. Its totient is φ = 188737600.

The previous prime is 520873069. The next prime is 520873109. The reversal of 520873100 is 1378025.

It is a super-2 number, since 2×520873100² = 542617572607220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520873100.

It is not an unprimeable number, because it can be changed into a prime (520873109) 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, 394241 + ... + 395559.

It is an arithmetic number, because the mean of its divisors is an integer number (17186400).

Almost surely, 2^520873100 is an apocalyptic number.

520873100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520873100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618710400).

520873100 is an abundant number, since it is smaller than the sum of its proper divisors (716547700).

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

520873100 is a wasteful number, since it uses less digits than its factorization.

520873100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 520873100 is about 22822.6444567671. The cubic root of 520873100 is about 804.5949636073.

The spelling of 520873100 in words is "five hundred twenty million, eight hundred seventy-three thousand, one hundred".