11400081 has 32 divisors (see below), whose sum is σ = 20072448. Its totient is φ = 5571840.

The previous prime is 11400071. The next prime is 11400097. The reversal of 11400081 is 18000411.

11400081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11400081 - 2⁶ = 11400017 is a prime.

It is a super-2 number, since 2×11400081² = 259923693613122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11400081.

It is not an unprimeable number, because it can be changed into a prime (11400071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2476 + ... + 5378.

It is an arithmetic number, because the mean of its divisors is an integer number (627264).

Almost surely, 2^11400081 is an apocalyptic number.

11400081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11400081 is a deficient number, since it is larger than the sum of its proper divisors (8672367).

11400081 is a wasteful number, since it uses less digits than its factorization.

11400081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 11400081 is about 3376.4005982703. The cubic root of 11400081 is about 225.0622445073.

Adding to 11400081 its reverse (18000411), we get a palindrome (29400492).

The spelling of 11400081 in words is "eleven million, four hundred thousand, eighty-one".