12972578 has 8 divisors (see below), whose sum is σ = 19571868. Its totient is φ = 6448624.

The previous prime is 12972577. The next prime is 12972587. The reversal of 12972578 is 87527921.

It can be written as a sum of positive squares in 2 ways, for example, as 12837889 + 134689 = 3583^2 + 367^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12972571) 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 3 ways as a sum of consecutive naturals, for example, 18401 + ... + 19092.

Almost surely, 2^12972578 is an apocalyptic number.

12972578 is a deficient number, since it is larger than the sum of its proper divisors (6599290).

12972578 is a wasteful number, since it uses less digits than its factorization.

12972578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37668.

The product of its digits is 70560, while the sum is 41.

The square root of 12972578 is about 3601.7465207868. The cubic root of 12972578 is about 234.9680234143.

The spelling of 12972578 in words is "twelve million, nine hundred seventy-two thousand, five hundred seventy-eight".