12558780 has 96 divisors (see below), whose sum is σ = 42100800. Its totient is φ = 3089664.

The previous prime is 12558779. The next prime is 12558781. The reversal of 12558780 is 8785521.

It is an interprime number because it is at equal distance from previous prime (12558779) and next prime (12558781).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12558781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6126 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (438550).

Almost surely, 2^12558780 is an apocalyptic number.

12558780 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 12558780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21050400).

12558780 is an abundant number, since it is smaller than the sum of its proper divisors (29542020).

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

12558780 is a wasteful number, since it uses less digits than its factorization.

12558780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 12558780 is about 3543.8369036963. The cubic root of 12558780 is about 232.4426497465.

The spelling of 12558780 in words is "twelve million, five hundred fifty-eight thousand, seven hundred eighty".