12478715 has 8 divisors (see below), whose sum is σ = 15016848. Its totient is φ = 9954720.

The previous prime is 12478699. The next prime is 12478717. The reversal of 12478715 is 51787421.

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

It is not a de Polignac number, because 12478715 - 2⁴ = 12478699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12478717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (1877106).

Almost surely, 2^12478715 is an apocalyptic number.

12478715 is a deficient number, since it is larger than the sum of its proper divisors (2538133).

12478715 is an equidigital number, since it uses as much as digits as its factorization.

12478715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7069.

The product of its digits is 15680, while the sum is 35.

The square root of 12478715 is about 3532.5224698507. The cubic root of 12478715 is about 231.9476385498.

The spelling of 12478715 in words is "twelve million, four hundred seventy-eight thousand, seven hundred fifteen".