11433681 has 24 divisors (see below), whose sum is σ = 19079424. Its totient is φ = 6462720.

The previous prime is 11433677. The next prime is 11433689. The reversal of 11433681 is 18633411.

It is not a de Polignac number, because 11433681 - 2² = 11433677 is a prime.

It is a super-2 number, since 2×11433681² = 261458122419522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11433689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5176 + ... + 7046.

It is an arithmetic number, because the mean of its divisors is an integer number (794976).

Almost surely, 2^11433681 is an apocalyptic number.

It is an amenable number.

11433681 is a deficient number, since it is larger than the sum of its proper divisors (7645743).

11433681 is a wasteful number, since it uses less digits than its factorization.

11433681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1978 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 11433681 is about 3381.3726502709. The cubic root of 11433681 is about 225.2831398439.

The spelling of 11433681 in words is "eleven million, four hundred thirty-three thousand, six hundred eighty-one".