11272881 has 8 divisors (see below), whose sum is σ = 15048160. Its totient is φ = 7506432.

The previous prime is 11272843. The next prime is 11272897. The reversal of 11272881 is 18827211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11272881 is a prime.

It is a super-2 number, since 2×11272881² = 254155692080322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11272801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (1881020).

Almost surely, 2^11272881 is an apocalyptic number.

It is an amenable number.

11272881 is a deficient number, since it is larger than the sum of its proper divisors (3775279).

11272881 is a wasteful number, since it uses less digits than its factorization.

11272881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415.

The product of its digits is 1792, while the sum is 30.

The square root of 11272881 is about 3357.5111317760. The cubic root of 11272881 is about 224.2220441183. Note that the first 3 decimals are identical.

The spelling of 11272881 in words is "eleven million, two hundred seventy-two thousand, eight hundred eighty-one".