12870045 has 12 divisors (see below), whose sum is σ = 22308156. Its totient is φ = 6864000.

The previous prime is 12870031. The next prime is 12870047. The reversal of 12870045 is 54007821.

12870045 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6260004 + 6610041 = 2502^2 + 2571^2 .

It is not a de Polignac number, because 12870045 - 2⁶ = 12869981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870047) 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, 142956 + ... + 143045.

It is an arithmetic number, because the mean of its divisors is an integer number (1859013).

Almost surely, 2^12870045 is an apocalyptic number.

12870045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12870045 is a deficient number, since it is larger than the sum of its proper divisors (9438111).

12870045 is a wasteful number, since it uses less digits than its factorization.

12870045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286012 (or 286009 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12870045 is about 3587.4844947400. The cubic root of 12870045 is about 234.3473364683.

Adding to 12870045 its reverse (54007821), we get a palindrome (66877866).

The spelling of 12870045 in words is "twelve million, eight hundred seventy thousand, forty-five".