12981590 has 16 divisors (see below), whose sum is σ = 23688288. Its totient is φ = 5121216.

The previous prime is 12981587. The next prime is 12981599. The reversal of 12981590 is 9518921.

It is a self number, because there is not a number n which added to its sum of digits gives 12981590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12981599) 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, 8162 + ... + 9621.

It is an arithmetic number, because the mean of its divisors is an integer number (1480518).

Almost surely, 2^12981590 is an apocalyptic number.

12981590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12981590 is a deficient number, since it is larger than the sum of its proper divisors (10706698).

12981590 is a wasteful number, since it uses less digits than its factorization.

12981590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17863.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 12981590 is about 3602.9973633074. The cubic root of 12981590 is about 235.0224212801.

The spelling of 12981590 in words is "twelve million, nine hundred eighty-one thousand, five hundred ninety".