12021760 has 52 divisors (see below), whose sum is σ = 28897848. Its totient is φ = 4800512.

The previous prime is 12021749. The next prime is 12021761. The reversal of 12021760 is 6712021.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20187 + ... + 20773.

Almost surely, 2^12021760 is an apocalyptic number.

12021760 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 12021760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14448924).

12021760 is an abundant number, since it is smaller than the sum of its proper divisors (16876088).

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

12021760 is an frugal number, since it uses more digits than its factorization.

12021760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12021760 is about 3467.2409780689. The cubic root of 12021760 is about 229.0811481827.

Adding to 12021760 its reverse (6712021), we get a palindrome (18733781).

The spelling of 12021760 in words is "twelve million, twenty-one thousand, seven hundred sixty".