11255720 has 64 divisors (see below), whose sum is σ = 29462400. Its totient is φ = 3790080.

The previous prime is 11255711. The next prime is 11255729. The reversal of 11255720 is 2755211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11255711) and next prime (11255729).

It is not an unprimeable number, because it can be changed into a prime (11255729) 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, 16751 + ... + 17409.

It is an arithmetic number, because the mean of its divisors is an integer number (460350).

Almost surely, 2^11255720 is an apocalyptic number.

11255720 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 11255720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14731200).

11255720 is an abundant number, since it is smaller than the sum of its proper divisors (18206680).

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

11255720 is a wasteful number, since it uses less digits than its factorization.

11255720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 11255720 is about 3354.9545451466. The cubic root of 11255720 is about 224.1082066493.

The spelling of 11255720 in words is "eleven million, two hundred fifty-five thousand, seven hundred twenty".