913520 has 40 divisors (see below), whose sum is σ = 2239440. Its totient is φ = 345600.

The previous prime is 913513. The next prime is 913571. The reversal of 913520 is 25319.

913520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 913492 and 913501.

It is a congruent number.

It is an unprimeable number.

913520 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 7 ways as a sum of consecutive naturals, for example, 1220 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (55986).

2⁹¹³⁵²⁰ 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 913520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119720).

913520 is an abundant number, since it is smaller than the sum of its proper divisors (1325920).

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

913520 is a wasteful number, since it uses less digits than its factorization.

913520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 913520 is about 955.7824020142. The cubic root of 913520 is about 97.0299974534.

Adding to 913520 its reverse (25319), we get a palindrome (938839).

The spelling of 913520 in words is "nine hundred thirteen thousand, five hundred twenty".