11629881 has 24 divisors (see below), whose sum is σ = 18457920. Its totient is φ = 7023456.

The previous prime is 11629879. The next prime is 11629883. The reversal of 11629881 is 18892611.

It is an interprime number because it is at equal distance from previous prime (11629879) and next prime (11629883).

It is not a de Polignac number, because 11629881 - 2¹ = 11629879 is a prime.

It is a super-2 number, since 2×11629881² = 270508264148322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11629883) 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 23 ways as a sum of consecutive naturals, for example, 2455 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (769080).

Almost surely, 2^11629881 is an apocalyptic number.

It is an amenable number.

11629881 is a deficient number, since it is larger than the sum of its proper divisors (6828039).

11629881 is a wasteful number, since it uses less digits than its factorization.

11629881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005 (or 3002 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 11629881 is about 3410.2611336964. The cubic root of 11629881 is about 226.5644452088.

The spelling of 11629881 in words is "eleven million, six hundred twenty-nine thousand, eight hundred eighty-one".