12578472 has 48 divisors (see below), whose sum is σ = 34905780. Its totient is φ = 4089600.

The previous prime is 12578471. The next prime is 12578477. The reversal of 12578472 is 27487521.

12578472 is a `hidden beast` number, since 12 + 578 + 4 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 4356 = 3546^2 + 66^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12578471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822 + ... + 5082.

Almost surely, 2^12578472 is an apocalyptic number.

12578472 is a gapful number since it is divisible by the number (12) 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 12578472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17452890).

12578472 is an abundant number, since it is smaller than the sum of its proper divisors (22327308).

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

12578472 is a wasteful number, since it uses less digits than its factorization.

12578472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314 (or 4307 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12578472 is about 3546.6141600123. The cubic root of 12578472 is about 232.5640752984.

The spelling of 12578472 in words is "twelve million, five hundred seventy-eight thousand, four hundred seventy-two".