12932478 has 48 divisors (see below), whose sum is σ = 31960656. Its totient is φ = 3744000.

The previous prime is 12932471. The next prime is 12932527. The reversal of 12932478 is 87423921.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12932471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2353 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (665847).

Almost surely, 2^12932478 is an apocalyptic number.

12932478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12932478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15980328).

12932478 is an abundant number, since it is smaller than the sum of its proper divisors (19028178).

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

12932478 is a wasteful number, since it uses less digits than its factorization.

12932478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3286 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12932478 is about 3596.1754684665. The cubic root of 12932478 is about 234.7256675028.

The spelling of 12932478 in words is "twelve million, nine hundred thirty-two thousand, four hundred seventy-eight".