11272520 has 64 divisors (see below), whose sum is σ = 29306880. Its totient is φ = 3822336.

The previous prime is 11272519. The next prime is 11272523. The reversal of 11272520 is 2527211.

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 = 11272492 and 11272501.

It is not an unprimeable number, because it can be changed into a prime (11272523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35402 + ... + 35718.

It is an arithmetic number, because the mean of its divisors is an integer number (457920).

Almost surely, 2^11272520 is an apocalyptic number.

11272520 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 11272520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14653440).

11272520 is an abundant number, since it is smaller than the sum of its proper divisors (18034360).

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

11272520 is a wasteful number, since it uses less digits than its factorization.

11272520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 458 counting only the distinct ones).

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

The square root of 11272520 is about 3357.4573712856. The cubic root of 11272520 is about 224.2196506153.

Adding to 11272520 its reverse (2527211), we get a palindrome (13799731).

The spelling of 11272520 in words is "eleven million, two hundred seventy-two thousand, five hundred twenty".