11880811 has 12 divisors (see below), whose sum is σ = 12776512. Its totient is φ = 11038896.

The previous prime is 11880809. The next prime is 11880821. The reversal of 11880811 is 11808811.

It is not a de Polignac number, because 11880811 - 2¹ = 11880809 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11880811.

It is not an unprimeable number, because it can be changed into a prime (11880821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19270 + ... + 19876.

Almost surely, 2^11880811 is an apocalyptic number.

11880811 is a deficient number, since it is larger than the sum of its proper divisors (895701).

11880811 is an equidigital number, since it uses as much as digits as its factorization.

11880811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 28.

The square root of 11880811 is about 3446.8552333975. The cubic root of 11880811 is about 228.1823397741.

The spelling of 11880811 in words is "eleven million, eight hundred eighty thousand, eight hundred eleven".