12467780 has 48 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 4537728.

The previous prime is 12467759. The next prime is 12467789. The reversal of 12467780 is 8776421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12467780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12467789) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20237 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (595840).

Almost surely, 2^12467780 is an apocalyptic number.

12467780 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 12467780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14300160).

12467780 is an abundant number, since it is smaller than the sum of its proper divisors (16132540).

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

12467780 is a wasteful number, since it uses less digits than its factorization.

12467780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 12467780 is about 3530.9743697739. The cubic root of 12467780 is about 231.8798674518.

The spelling of 12467780 in words is "twelve million, four hundred sixty-seven thousand, seven hundred eighty".