12378715 has 8 divisors (see below), whose sum is σ = 15500448. Its totient is φ = 9472320.

The previous prime is 12378713. The next prime is 12378727. The reversal of 12378715 is 51787321.

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

It is not a de Polignac number, because 12378715 - 2¹ = 12378713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12378713) 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, 53706 + ... + 53935.

It is an arithmetic number, because the mean of its divisors is an integer number (1937556).

Almost surely, 2^12378715 is an apocalyptic number.

12378715 is a deficient number, since it is larger than the sum of its proper divisors (3121733).

12378715 is a wasteful number, since it uses less digits than its factorization.

12378715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107669.

The product of its digits is 11760, while the sum is 34.

The square root of 12378715 is about 3518.3398073523. The cubic root of 12378715 is about 231.3263940444.

The spelling of 12378715 in words is "twelve million, three hundred seventy-eight thousand, seven hundred fifteen".