12078745 has 16 divisors (see below), whose sum is σ = 16905600. Its totient is φ = 8281392.

The previous prime is 12078727. The next prime is 12078751. The reversal of 12078745 is 54787021.

It is a happy number.

12078745 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12078745 - 2⁹ = 12078233 is a prime.

12078745 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 12078745.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1807 + ... + 5236.

It is an arithmetic number, because the mean of its divisors is an integer number (1056600).

Almost surely, 2^12078745 is an apocalyptic number.

It is an amenable number.

12078745 is a deficient number, since it is larger than the sum of its proper divisors (4826855).

12078745 is an frugal number, since it uses more digits than its factorization.

12078745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7069 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 12078745 is about 3475.4488918699. The cubic root of 12078745 is about 229.4425377819.

The spelling of 12078745 in words is "twelve million, seventy-eight thousand, seven hundred forty-five".