11171440 has 40 divisors (see below), whose sum is σ = 29685600. Its totient is φ = 3830016.

The previous prime is 11171437. The next prime is 11171441. The reversal of 11171440 is 4417111.

11171440 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

11171440 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11171441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9415 + ... + 10534.

It is an arithmetic number, because the mean of its divisors is an integer number (742140).

Almost surely, 2^11171440 is an apocalyptic number.

11171440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11171440 is an abundant number, since it is smaller than the sum of its proper divisors (18514160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11171440 is a wasteful number, since it uses less digits than its factorization.

11171440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19969 (or 19963 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 11171440 is about 3342.3704163363. The cubic root of 11171440 is about 223.5474494162.

Adding to 11171440 its reverse (4417111), we get a palindrome (15588551).

It can be divided in two parts, 11171 and 440, that added together give a palindrome (11611).

The spelling of 11171440 in words is "eleven million, one hundred seventy-one thousand, four hundred forty".