900520 has 32 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 351808.

The previous prime is 900511. The next prime is 900539. The reversal of 900520 is 25009.

It is a junction number, because it is equal to n+sod(n) for n = 900494 and 900503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁹⁰⁰⁵²⁰ 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 900520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036800).

900520 is an abundant number, since it is smaller than the sum of its proper divisors (1173080).

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

900520 is a wasteful number, since it uses less digits than its factorization.

900520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 900520 is about 948.9573225388. The cubic root of 900520 is about 96.5675294909.

Adding to 900520 its reverse (25009), we get a palindrome (925529).

It can be divided in two parts, 9005 and 20, that added together give a square (9025 = 95²).

The spelling of 900520 in words is "nine hundred thousand, five hundred twenty".