12705078 has 8 divisors (see below), whose sum is σ = 25410168. Its totient is φ = 4235024.

The previous prime is 12705067. The next prime is 12705101. The reversal of 12705078 is 87050721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12705078 is an admirable number.

It is a super-2 number, since 2×12705078² = 322838013972168, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058751 + ... + 1058762.

It is an arithmetic number, because the mean of its divisors is an integer number (3176271).

Almost surely, 2^12705078 is an apocalyptic number.

12705078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12705078 is a wasteful number, since it uses less digits than its factorization.

12705078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117518.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 12705078 is about 3564.4183256178. The cubic root of 12705078 is about 233.3417470889.

Adding to 12705078 its reverse (87050721), we get a palindrome (99755799).

The spelling of 12705078 in words is "twelve million, seven hundred five thousand, seventy-eight".