12486540 has 48 divisors (see below), whose sum is σ = 38142720. Its totient is φ = 3026880.

The previous prime is 12486533. The next prime is 12486541. The reversal of 12486540 is 4568421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12486498 and 12486507.

It is not an unprimeable number, because it can be changed into a prime (12486541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8800 + ... + 10119.

It is an arithmetic number, because the mean of its divisors is an integer number (794640).

Almost surely, 2^12486540 is an apocalyptic number.

12486540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12486540 is an abundant number, since it is smaller than the sum of its proper divisors (25656180).

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

12486540 is a wasteful number, since it uses less digits than its factorization.

12486540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18942 (or 18940 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 12486540 is about 3533.6298617710. The cubic root of 12486540 is about 231.9961107156.

The spelling of 12486540 in words is "twelve million, four hundred eighty-six thousand, five hundred forty".