11472881 has 4 divisors (see below), whose sum is σ = 13111872. Its totient is φ = 9833892.

The previous prime is 11472871. The next prime is 11472887. The reversal of 11472881 is 18827411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18827411 = 139 ⋅135449.

It is a cyclic number.

It is not a de Polignac number, because 11472881 - 2⁶ = 11472817 is a prime.

It is a super-2 number, since 2×11472881² = 263253996880322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11472887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819485 + ... + 819498.

It is an arithmetic number, because the mean of its divisors is an integer number (3277968).

Almost surely, 2^11472881 is an apocalyptic number.

It is an amenable number.

11472881 is a deficient number, since it is larger than the sum of its proper divisors (1638991).

11472881 is an equidigital number, since it uses as much as digits as its factorization.

11472881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638990.

The product of its digits is 3584, while the sum is 32.

The square root of 11472881 is about 3387.1641530933. The cubic root of 11472881 is about 225.5403047902.

The spelling of 11472881 in words is "eleven million, four hundred seventy-two thousand, eight hundred eighty-one".