11552640 has 128 divisors (see below), whose sum is σ = 40245120. Its totient is φ = 2795520.

The previous prime is 11552617. The next prime is 11552659. The reversal of 11552640 is 4625511.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a self number, because there is not a number n which added to its sum of digits gives 11552640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20847 + ... + 21393.

It is an arithmetic number, because the mean of its divisors is an integer number (314415).

Almost surely, 2^11552640 is an apocalyptic number.

11552640 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 11552640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20122560).

11552640 is an abundant number, since it is smaller than the sum of its proper divisors (28692480).

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

11552640 is a wasteful number, since it uses less digits than its factorization.

11552640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 11552640 is about 3398.9174747263. The cubic root of 11552640 is about 226.0617472964.

The spelling of 11552640 in words is "eleven million, five hundred fifty-two thousand, six hundred forty".