11273728 has 40 divisors (see below), whose sum is σ = 22857912. Its totient is φ = 5554176.

The previous prime is 11273701. The next prime is 11273741. The reversal of 11273728 is 82737211.

It is a self number, because there is not a number n which added to its sum of digits gives 11273728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49551 + ... + 49777.

Almost surely, 2^11273728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11273728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11428956).

11273728 is an abundant number, since it is smaller than the sum of its proper divisors (11584184).

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

11273728 is an frugal number, since it uses more digits than its factorization.

11273728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 326 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 11273728 is about 3357.6372645061. The cubic root of 11273728 is about 224.2276596989.

The spelling of 11273728 in words is "eleven million, two hundred seventy-three thousand, seven hundred twenty-eight".