12259780 has 48 divisors (see below), whose sum is σ = 28216944. Its totient is φ = 4446720.

The previous prime is 12259763. The next prime is 12259813. The reversal of 12259780 is 8795221.

It can be written as a sum of positive squares in 8 ways, for example, as 6718464 + 5541316 = 2592^2 + 2354^2 .

It is an unprimeable number.

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, 15474 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (587853).

Almost surely, 2^12259780 is an apocalyptic number.

12259780 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 12259780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14108472).

12259780 is an abundant number, since it is smaller than the sum of its proper divisors (15957164).

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

12259780 is a wasteful number, since it uses less digits than its factorization.

12259780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 12259780 is about 3501.3968641101. The cubic root of 12259780 is about 230.5831453142.

The spelling of 12259780 in words is "twelve million, two hundred fifty-nine thousand, seven hundred eighty".