12391608 has 32 divisors (see below), whose sum is σ = 31138560. Its totient is φ = 4109280.

The previous prime is 12391607. The next prime is 12391609. The reversal of 12391608 is 80619321.

12391608 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12391607) and next prime (12391609).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12391607) 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, 3841 + ... + 6287.

It is an arithmetic number, because the mean of its divisors is an integer number (973080).

Almost surely, 2^12391608 is an apocalyptic number.

It is an amenable number.

12391608 is an abundant number, since it is smaller than the sum of its proper divisors (18746952).

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

12391608 is a wasteful number, since it uses less digits than its factorization.

12391608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667 (or 2663 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12391608 is about 3520.1715867270. The cubic root of 12391608 is about 231.4066785308.

The spelling of 12391608 in words is "twelve million, three hundred ninety-one thousand, six hundred eight".