11272500 has 120 divisors (see below), whose sum is σ = 36738240. Its totient is φ = 2988000.

The previous prime is 11272463. The next prime is 11272501. The reversal of 11272500 is 527211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11272501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 67417 + ... + 67583.

It is an arithmetic number, because the mean of its divisors is an integer number (306152).

Almost surely, 2^11272500 is an apocalyptic number.

11272500 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 11272500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18369120).

11272500 is an abundant number, since it is smaller than the sum of its proper divisors (25465740).

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

11272500 is a wasteful number, since it uses less digits than its factorization.

11272500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 11272500 is about 3357.4543928399. The cubic root of 11272500 is about 224.2195180098.

Adding to 11272500 its reverse (527211), we get a palindrome (11799711).

The spelling of 11272500 in words is "eleven million, two hundred seventy-two thousand, five hundred".