12489672 has 32 divisors (see below), whose sum is σ = 33626880. Its totient is φ = 3842880.

The previous prime is 12489661. The next prime is 12489703. The reversal of 12489672 is 27698421.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 12489672.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19704 + ... + 20327.

It is an arithmetic number, because the mean of its divisors is an integer number (1050840).

Almost surely, 2^12489672 is an apocalyptic number.

12489672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12489672 is an abundant number, since it is smaller than the sum of its proper divisors (21137208).

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

12489672 is a wasteful number, since it uses less digits than its factorization.

12489672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40053 (or 40049 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 12489672 is about 3534.0730043393. The cubic root of 12489672 is about 232.0155062961.

The spelling of 12489672 in words is "twelve million, four hundred eighty-nine thousand, six hundred seventy-two".