11390720 has 72 divisors (see below), whose sum is σ = 29801520. Its totient is φ = 4136960.

The previous prime is 11390719. The next prime is 11390723. The reversal of 11390720 is 2709311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390723) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13676 + ... + 14484.

It is an arithmetic number, because the mean of its divisors is an integer number (413910).

Almost surely, 2^11390720 is an apocalyptic number.

11390720 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 11390720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14900760).

11390720 is an abundant number, since it is smaller than the sum of its proper divisors (18410800).

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

11390720 is an equidigital number, since it uses as much as digits as its factorization.

11390720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 11390720 is about 3375.0140740447. The cubic root of 11390720 is about 225.0006255127. Note that the first 3 decimals are identical.

The spelling of 11390720 in words is "eleven million, three hundred ninety thousand, seven hundred twenty".