11573520 has 120 divisors (see below), whose sum is σ = 41503296. Its totient is φ = 2613504.

The previous prime is 11573519. The next prime is 11573539. The reversal of 11573520 is 2537511.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139399 + ... + 139481.

Almost surely, 2^11573520 is an apocalyptic number.

11573520 is a gapful number since it is divisible by the number (10) 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 11573520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20751648).

11573520 is an abundant number, since it is smaller than the sum of its proper divisors (29929776).

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

11573520 is an equidigital number, since it uses as much as digits as its factorization.

11573520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 11573520 is about 3401.9876542986. The cubic root of 11573520 is about 226.1978584197.

The spelling of 11573520 in words is "eleven million, five hundred seventy-three thousand, five hundred twenty".