11291328 has 42 divisors (see below), whose sum is σ = 32366204. Its totient is φ = 3763584.

The previous prime is 11291317. The next prime is 11291333. The reversal of 11291328 is 82319211.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9226 + ... + 10377.

Almost surely, 2^11291328 is an apocalyptic number.

11291328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11291328 is an abundant number, since it is smaller than the sum of its proper divisors (21074876).

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

11291328 is a wasteful number, since it uses less digits than its factorization.

11291328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19621 (or 19608 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 11291328 is about 3360.2571330182. The cubic root of 11291328 is about 224.3442834973.

The spelling of 11291328 in words is "eleven million, two hundred ninety-one thousand, three hundred twenty-eight".