11441640 has 128 divisors (see below), whose sum is σ = 40124160. Its totient is φ = 2555904.

The previous prime is 11441627. The next prime is 11441641. The reversal of 11441640 is 4614411.

It is a super-2 number, since 2×11441640² = 261822251779200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11441641) 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 31 ways as a sum of consecutive naturals, for example, 44392 + ... + 44648.

It is an arithmetic number, because the mean of its divisors is an integer number (313470).

Almost surely, 2^11441640 is an apocalyptic number.

11441640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11441640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20062080).

11441640 is an abundant number, since it is smaller than the sum of its proper divisors (28682520).

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

11441640 is a wasteful number, since it uses less digits than its factorization.

11441640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 11441640 is about 3382.5493344518. The cubic root of 11441640 is about 225.3354010135.

The spelling of 11441640 in words is "eleven million, four hundred forty-one thousand, six hundred forty".