12452978 has 8 divisors (see below), whose sum is σ = 18730668. Its totient is φ = 6209424.

The previous prime is 12452963. The next prime is 12452983. The reversal of 12452978 is 87925421.

It can be written as a sum of positive squares in 2 ways, for example, as 11785489 + 667489 = 3433^2 + 817^2 .

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

It is a super-2 number, since 2×12452978² = 310153322136968, which contains 22 as substring.

It is an unprimeable number.

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, 7601 + ... + 9092.

Almost surely, 2^12452978 is an apocalyptic number.

12452978 is a deficient number, since it is larger than the sum of its proper divisors (6277690).

12452978 is a wasteful number, since it uses less digits than its factorization.

12452978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17068.

The product of its digits is 40320, while the sum is 38.

The square root of 12452978 is about 3528.8777252832. The cubic root of 12452978 is about 231.7880669605.

The spelling of 12452978 in words is "twelve million, four hundred fifty-two thousand, nine hundred seventy-eight".