12387872 has 48 divisors (see below), whose sum is σ = 28848960. Its totient is φ = 5123328.

The previous prime is 12387871. The next prime is 12387877. The reversal of 12387872 is 27878321.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12387871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5543 + ... + 7449.

It is an arithmetic number, because the mean of its divisors is an integer number (601020).

Almost surely, 2^12387872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12387872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14424480).

12387872 is an abundant number, since it is smaller than the sum of its proper divisors (16461088).

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

12387872 is a wasteful number, since it uses less digits than its factorization.

12387872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953 (or 1945 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 12387872 is about 3519.6408907728. The cubic root of 12387872 is about 231.3834202567.

The spelling of 12387872 in words is "twelve million, three hundred eighty-seven thousand, eight hundred seventy-two".