12978590 has 16 divisors (see below), whose sum is σ = 23414400. Its totient is φ = 5179680.

The previous prime is 12978583. The next prime is 12978593. The reversal of 12978590 is 9587921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12978593) 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, 4211 + ... + 6609.

It is an arithmetic number, because the mean of its divisors is an integer number (1463400).

Almost surely, 2^12978590 is an apocalyptic number.

12978590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12978590 is a deficient number, since it is larger than the sum of its proper divisors (10435810).

12978590 is a wasteful number, since it uses less digits than its factorization.

12978590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 12978590 is about 3602.5810192139. The cubic root of 12978590 is about 235.0043155990.

The spelling of 12978590 in words is "twelve million, nine hundred seventy-eight thousand, five hundred ninety".