12867790 has 48 divisors (see below), whose sum is σ = 26024544. Its totient is φ = 4553280.

The previous prime is 12867781. The next prime is 12867791. The reversal of 12867790 is 9776821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867791) 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 23 ways as a sum of consecutive naturals, for example, 124879 + ... + 124981.

It is an arithmetic number, because the mean of its divisors is an integer number (542178).

Almost surely, 2^12867790 is an apocalyptic number.

12867790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12867790 is an abundant number, since it is smaller than the sum of its proper divisors (13156754).

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

12867790 is a wasteful number, since it uses less digits than its factorization.

12867790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 12867790 is about 3587.1701938994. The cubic root of 12867790 is about 234.3336487640. Note that the first 3 decimals are identical.

The spelling of 12867790 in words is "twelve million, eight hundred sixty-seven thousand, seven hundred ninety".