12858940 has 12 divisors (see below), whose sum is σ = 27003816. Its totient is φ = 5143568.

The previous prime is 12858929. The next prime is 12858947. The reversal of 12858940 is 4985821.

It is a self number, because there is not a number n which added to its sum of digits gives 12858940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12858947) 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 3 ways as a sum of consecutive naturals, for example, 321454 + ... + 321493.

It is an arithmetic number, because the mean of its divisors is an integer number (2250318).

Almost surely, 2^12858940 is an apocalyptic number.

12858940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12858940 is an abundant number, since it is smaller than the sum of its proper divisors (14144876).

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

12858940 is a wasteful number, since it uses less digits than its factorization.

12858940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642956 (or 642954 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 12858940 is about 3585.9364188452. The cubic root of 12858940 is about 234.2799143773.

The spelling of 12858940 in words is "twelve million, eight hundred fifty-eight thousand, nine hundred forty".