11422720 has 88 divisors (see below), whose sum is σ = 28887264. Its totient is φ = 4325376.

The previous prime is 11422717. The next prime is 11422721. The reversal of 11422720 is 2722411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11422721) 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, 117712 + ... + 117808.

Almost surely, 2^11422720 is an apocalyptic number.

11422720 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 11422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14443632).

11422720 is an abundant number, since it is smaller than the sum of its proper divisors (17464544).

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

11422720 is an equidigital number, since it uses as much as digits as its factorization.

11422720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 11422720 is about 3379.7514701528. The cubic root of 11422720 is about 225.2111269317.

The spelling of 11422720 in words is "eleven million, four hundred twenty-two thousand, seven hundred twenty".