11656320 has 128 divisors (see below), whose sum is σ = 40098240. Its totient is φ = 2863104.

The previous prime is 11656319. The next prime is 11656321. The reversal of 11656320 is 2365611.

It is an interprime number because it is at equal distance from previous prime (11656319) and next prime (11656321).

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 not an unprimeable number, because it can be changed into a prime (11656321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24727 + ... + 25193.

Almost surely, 2^11656320 is an apocalyptic number.

11656320 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 11656320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20049120).

11656320 is an abundant number, since it is smaller than the sum of its proper divisors (28441920).

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

11656320 is a wasteful number, since it uses less digits than its factorization.

11656320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 11656320 is about 3414.1353224499. The cubic root of 11656320 is about 226.7360033938.

The spelling of 11656320 in words is "eleven million, six hundred fifty-six thousand, three hundred twenty".