12478320 has 160 divisors (see below), whose sum is σ = 44193600. Its totient is φ = 3234816.

The previous prime is 12478283. The next prime is 12478327. The reversal of 12478320 is 2387421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114426 + ... + 114534.

It is an arithmetic number, because the mean of its divisors is an integer number (276210).

Almost surely, 2^12478320 is an apocalyptic number.

12478320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12478320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22096800).

12478320 is an abundant number, since it is smaller than the sum of its proper divisors (31715280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12478320 is a wasteful number, since it uses less digits than its factorization.

12478320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12478320 is about 3532.4665603513. The cubic root of 12478320 is about 231.9451911748.

The spelling of 12478320 in words is "twelve million, four hundred seventy-eight thousand, three hundred twenty".