13087478 has 4 divisors (see below), whose sum is σ = 19631220. Its totient is φ = 6543738.

The previous prime is 13087463. The next prime is 13087507. The reversal of 13087478 is 87478031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87478031 = 2801 ⋅31231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271868 + ... + 3271871.

It is an arithmetic number, because the mean of its divisors is an integer number (4907805).

Almost surely, 2^13087478 is an apocalyptic number.

13087478 is a deficient number, since it is larger than the sum of its proper divisors (6543742).

13087478 is an equidigital number, since it uses as much as digits as its factorization.

13087478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543741.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 13087478 is about 3617.6619521453. The cubic root of 13087478 is about 235.6597005793.

The spelling of 13087478 in words is "thirteen million, eighty-seven thousand, four hundred seventy-eight".