12606780 has 24 divisors (see below), whose sum is σ = 35299152. Its totient is φ = 3361792.

The previous prime is 12606767. The next prime is 12606821. The reversal of 12606780 is 8760621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 104997 + ... + 105116.

It is an arithmetic number, because the mean of its divisors is an integer number (1470798).

Almost surely, 2^12606780 is an apocalyptic number.

12606780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12606780 is an abundant number, since it is smaller than the sum of its proper divisors (22692372).

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

12606780 is a wasteful number, since it uses less digits than its factorization.

12606780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210125 (or 210123 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 12606780 is about 3550.6027657287. The cubic root of 12606780 is about 232.7384073190.

The spelling of 12606780 in words is "twelve million, six hundred six thousand, seven hundred eighty".