12145716 has 36 divisors (see below), whose sum is σ = 33493824. Its totient is φ = 3680400.

The previous prime is 12145711. The next prime is 12145723. The reversal of 12145716 is 61754121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12145716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145711) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 14940 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (930384).

Almost surely, 2^12145716 is an apocalyptic number.

It is an amenable number.

12145716 is an abundant number, since it is smaller than the sum of its proper divisors (21348108).

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

12145716 is a wasteful number, since it uses less digits than its factorization.

12145716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30692 (or 30687 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 12145716 is about 3485.0704440513. The cubic root of 12145716 is about 229.8658070389.

Adding to 12145716 its reverse (61754121), we get a palindrome (73899837).

The spelling of 12145716 in words is "twelve million, one hundred forty-five thousand, seven hundred sixteen".