12478867 has 8 divisors (see below), whose sum is σ = 13250736. Its totient is φ = 11711232.

The previous prime is 12478859. The next prime is 12478891. The reversal of 12478867 is 76887421.

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

It is not a de Polignac number, because 12478867 - 2³ = 12478859 is a prime.

It is a super-3 number, since 3×12478867³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12478567) 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, 6703 + ... + 8359.

It is an arithmetic number, because the mean of its divisors is an integer number (1656342).

Almost surely, 2^12478867 is an apocalyptic number.

12478867 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12478867 is a deficient number, since it is larger than the sum of its proper divisors (771869).

12478867 is a wasteful number, since it uses less digits than its factorization.

12478867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117.

The product of its digits is 150528, while the sum is 43.

The square root of 12478867 is about 3532.5439841565. The cubic root of 12478867 is about 231.9485803107.

The spelling of 12478867 in words is "twelve million, four hundred seventy-eight thousand, eight hundred sixty-seven".