12133780 has 48 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 4468608.

The previous prime is 12133777. The next prime is 12133787. The reversal of 12133780 is 8733121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13629 + ... + 14491.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^12133780 is an apocalyptic number.

12133780 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 12133780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13789440).

12133780 is an abundant number, since it is smaller than the sum of its proper divisors (15445100).

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

12133780 is a wasteful number, since it uses less digits than its factorization.

12133780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12133780 is about 3483.3575756732. The cubic root of 12133780 is about 229.7904834287.

The spelling of 12133780 in words is "twelve million, one hundred thirty-three thousand, seven hundred eighty".