12961838 has 16 divisors (see below), whose sum is σ = 20545920. Its totient is φ = 6115896.

The previous prime is 12961789. The next prime is 12961841. The reversal of 12961838 is 83816921.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 12695 + ... + 13677.

It is an arithmetic number, because the mean of its divisors is an integer number (1284120).

Almost surely, 2^12961838 is an apocalyptic number.

12961838 is a deficient number, since it is larger than the sum of its proper divisors (7584082).

12961838 is a wasteful number, since it uses less digits than its factorization.

12961838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its digits is 20736, while the sum is 38.

The square root of 12961838 is about 3600.2552687275. The cubic root of 12961838 is about 234.9031621531.

The spelling of 12961838 in words is "twelve million, nine hundred sixty-one thousand, eight hundred thirty-eight".