12245780 has 24 divisors (see below), whose sum is σ = 27229608. Its totient is φ = 4610048.

The previous prime is 12245767. The next prime is 12245819. The reversal of 12245780 is 8754221.

It can be written as a sum of positive squares in 4 ways, for example, as 2598544 + 9647236 = 1612^2 + 3106^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17669 + ... + 18348.

It is an arithmetic number, because the mean of its divisors is an integer number (1134567).

Almost surely, 2^12245780 is an apocalyptic number.

12245780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12245780 is an abundant number, since it is smaller than the sum of its proper divisors (14983828).

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

12245780 is a wasteful number, since it uses less digits than its factorization.

12245780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36043 (or 36041 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 12245780 is about 3499.3970909287. The cubic root of 12245780 is about 230.4953407584.

The spelling of 12245780 in words is "twelve million, two hundred forty-five thousand, seven hundred eighty".