12280782 has 16 divisors (see below), whose sum is σ = 24815952. Its totient is φ = 4051200.

The previous prime is 12280769. The next prime is 12280813. The reversal of 12280782 is 28708221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9969 + ... + 11132.

It is an arithmetic number, because the mean of its divisors is an integer number (1550997).

Almost surely, 2^12280782 is an apocalyptic number.

12280782 is an abundant number, since it is smaller than the sum of its proper divisors (12535170).

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

12280782 is a wasteful number, since it uses less digits than its factorization.

12280782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21203.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 12280782 is about 3504.3946695542. The cubic root of 12280782 is about 230.7147394246.

The spelling of 12280782 in words is "twelve million, two hundred eighty thousand, seven hundred eighty-two".