11622520 has 128 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 3525120.

The previous prime is 11622517. The next prime is 11622539. The reversal of 11622520 is 2522611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112789 + ... + 112891.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

Almost surely, 2^11622520 is an apocalyptic number.

11622520 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 11622520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16773120).

11622520 is an abundant number, since it is smaller than the sum of its proper divisors (21923720).

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

11622520 is a wasteful number, since it uses less digits than its factorization.

11622520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 11622520 is about 3409.1817200026. The cubic root of 11622520 is about 226.5166346633.

Subtracting from 11622520 its reverse (2522611), we obtain a palindrome (9099909).

The spelling of 11622520 in words is "eleven million, six hundred twenty-two thousand, five hundred twenty".