12774545 has 24 divisors (see below), whose sum is σ = 18615744. Its totient is φ = 8375136.

The previous prime is 12774539. The next prime is 12774547. The reversal of 12774545 is 54547721.

It is not a de Polignac number, because 12774545 - 2¹⁰ = 12773521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (12774547) 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 23 ways as a sum of consecutive naturals, for example, 4502 + ... + 6768.

It is an arithmetic number, because the mean of its divisors is an integer number (775656).

Almost surely, 2^12774545 is an apocalyptic number.

It is an amenable number.

12774545 is a deficient number, since it is larger than the sum of its proper divisors (5841199).

12774545 is a wasteful number, since it uses less digits than its factorization.

12774545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309 (or 2302 counting only the distinct ones).

The product of its digits is 39200, while the sum is 35.

The square root of 12774545 is about 3574.1495491935. The cubic root of 12774545 is about 233.7662518370.

The spelling of 12774545 in words is "twelve million, seven hundred seventy-four thousand, five hundred forty-five".