520992 has 72 divisors (see below), whose sum is σ = 1559376. Its totient is φ = 171072.

The previous prime is 520981. The next prime is 521009. The reversal of 520992 is 299025.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

520992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7743 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (21658).

2⁵²⁰⁹⁹² 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 520992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779688).

520992 is an abundant number, since it is smaller than the sum of its proper divisors (1038384).

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

520992 is an equidigital number, since it uses as much as digits as its factorization.

520992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 520992 is about 721.7977556075. The cubic root of 520992 is about 80.4656180733.

The spelling of 520992 in words is "five hundred twenty thousand, nine hundred ninety-two".