12619478 has 4 divisors (see below), whose sum is σ = 18929220. Its totient is φ = 6309738.

The previous prime is 12619463. The next prime is 12619487. The reversal of 12619478 is 87491621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87491621 = 7 ⋅12498803.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3154868 + ... + 3154871.

It is an arithmetic number, because the mean of its divisors is an integer number (4732305).

Almost surely, 2^12619478 is an apocalyptic number.

12619478 is a deficient number, since it is larger than the sum of its proper divisors (6309742).

12619478 is an equidigital number, since it uses as much as digits as its factorization.

12619478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309741.

The product of its digits is 24192, while the sum is 38.

The square root of 12619478 is about 3552.3904627729. The cubic root of 12619478 is about 232.8165219160.

The spelling of 12619478 in words is "twelve million, six hundred nineteen thousand, four hundred seventy-eight".