12478407 has 8 divisors (see below), whose sum is σ = 16738176. Its totient is φ = 8268792.

The previous prime is 12478393. The next prime is 12478409. The reversal of 12478407 is 70487421.

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

It is not a de Polignac number, because 12478407 - 2¹⁵ = 12445639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478409) 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, 11953 + ... + 12954.

It is an arithmetic number, because the mean of its divisors is an integer number (2092272).

Almost surely, 2^12478407 is an apocalyptic number.

12478407 is a deficient number, since it is larger than the sum of its proper divisors (4259769).

12478407 is a wasteful number, since it uses less digits than its factorization.

12478407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25077.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 12478407 is about 3532.4788746714. The cubic root of 12478407 is about 231.9457302213.

The spelling of 12478407 in words is "twelve million, four hundred seventy-eight thousand, four hundred seven".