12579780 has 48 divisors (see below), whose sum is σ = 35731584. Its totient is φ = 3306240.

The previous prime is 12579773. The next prime is 12579793. The reversal of 12579780 is 8797521.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2784 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (744408).

Almost surely, 2^12579780 is an apocalyptic number.

12579780 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 12579780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17865792).

12579780 is an abundant number, since it is smaller than the sum of its proper divisors (23151804).

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

12579780 is a wasteful number, since it uses less digits than its factorization.

12579780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036 (or 3034 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 12579780 is about 3546.7985564450. The cubic root of 12579780 is about 232.5721362475.

The spelling of 12579780 in words is "twelve million, five hundred seventy-nine thousand, seven hundred eighty".