12056040 has 120 divisors (see below), whose sum is σ = 41196870. Its totient is φ = 3162240.

The previous prime is 12056027. The next prime is 12056041. The reversal of 12056040 is 4065021.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2802276 + 9253764 = 1674^2 + 3042^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12056041) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 197610 + ... + 197670.

Almost surely, 2^12056040 is an apocalyptic number.

12056040 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 12056040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20598435).

12056040 is an abundant number, since it is smaller than the sum of its proper divisors (29140830).

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

12056040 is an equidigital number, since it uses as much as digits as its factorization.

12056040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12056040 is about 3472.1808708649. The cubic root of 12056040 is about 229.2986828695.

The spelling of 12056040 in words is "twelve million, fifty-six thousand, forty".