11522720 has 48 divisors (see below), whose sum is σ = 29701728. Its totient is φ = 4189440.

The previous prime is 11522711. The next prime is 11522729. The reversal of 11522720 is 2722511.

11522720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11522711) and next prime (11522729).

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 = 11522692 and 11522701.

It is not an unprimeable number, because it can be changed into a prime (11522729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (618786).

Almost surely, 2^11522720 is an apocalyptic number.

11522720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11522720 is an abundant number, since it is smaller than the sum of its proper divisors (18179008).

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

11522720 is a wasteful number, since it uses less digits than its factorization.

11522720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573 (or 6565 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 11522720 is about 3394.5132198888. The cubic root of 11522720 is about 225.8664206577.

The spelling of 11522720 in words is "eleven million, five hundred twenty-two thousand, seven hundred twenty".