12061720 has 64 divisors (see below), whose sum is σ = 30067200. Its totient is φ = 4318080.

The previous prime is 12061703. The next prime is 12061727. The reversal of 12061720 is 2716021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12061727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34587 + ... + 34933.

It is an arithmetic number, because the mean of its divisors is an integer number (469800).

Almost surely, 2^12061720 is an apocalyptic number.

12061720 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 12061720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15033600).

12061720 is an abundant number, since it is smaller than the sum of its proper divisors (18005480).

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

12061720 is a wasteful number, since it uses less digits than its factorization.

12061720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 444 counting only the distinct ones).

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

The square root of 12061720 is about 3472.9987042900. The cubic root of 12061720 is about 229.3346872854.

Adding to 12061720 its reverse (2716021), we get a palindrome (14777741).

It can be divided in two parts, 1206 and 1720, that added together give a triangular number (2926 = T₇₆).

The spelling of 12061720 in words is "twelve million, sixty-one thousand, seven hundred twenty".