12041440 has 96 divisors (see below), whose sum is σ = 31842720. Its totient is φ = 4276224.

The previous prime is 12041411. The next prime is 12041473. The reversal of 12041440 is 4414021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51564 + ... + 51796.

It is an arithmetic number, because the mean of its divisors is an integer number (331695).

Almost surely, 2^12041440 is an apocalyptic number.

12041440 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 12041440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15921360).

12041440 is an abundant number, since it is smaller than the sum of its proper divisors (19801280).

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

12041440 is a wasteful number, since it uses less digits than its factorization.

12041440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12041440 is about 3470.0778089259. The cubic root of 12041440 is about 229.2060843858.

Adding to 12041440 its reverse (4414021), we get a palindrome (16455461).

The spelling of 12041440 in words is "twelve million, forty-one thousand, four hundred forty".