12986040 has 32 divisors (see below), whose sum is σ = 38958480. Its totient is φ = 3462912.

The previous prime is 12986033. The next prime is 12986041. The reversal of 12986040 is 4068921.

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 = 12985989 and 12986007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12986041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53989 + ... + 54228.

Almost surely, 2^12986040 is an apocalyptic number.

12986040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12986040 is an abundant number, since it is smaller than the sum of its proper divisors (25972440).

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

12986040 is a wasteful number, since it uses less digits than its factorization.

12986040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108231 (or 108227 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12986040 is about 3603.6148517842. The cubic root of 12986040 is about 235.0492729034.

The spelling of 12986040 in words is "twelve million, nine hundred eighty-six thousand, forty".