12563478 has 32 divisors (see below), whose sum is σ = 28084320. Its totient is φ = 4163040.

The previous prime is 12563477. The next prime is 12563501. The reversal of 12563478 is 87436521.

12563478 is a `hidden beast` number, since 12 + 5 + 634 + 7 + 8 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12563477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10048 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (877635).

Almost surely, 2^12563478 is an apocalyptic number.

12563478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12563478 is an abundant number, since it is smaller than the sum of its proper divisors (15520842).

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

12563478 is a wasteful number, since it uses less digits than its factorization.

12563478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1383 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12563478 is about 3544.4996826068. The cubic root of 12563478 is about 232.4716302533.

Adding to 12563478 its reverse (87436521), we get a palindrome (99999999).

It can be divided in two parts, 12563 and 478, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12563478 in words is "twelve million, five hundred sixty-three thousand, four hundred seventy-eight".