12938402 has 8 divisors (see below), whose sum is σ = 19426512. Its totient is φ = 6462900.

The previous prime is 12938389. The next prime is 12938461. The reversal of 12938402 is 20483921.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 77 + ... + 5087.

It is an arithmetic number, because the mean of its divisors is an integer number (2428314).

Almost surely, 2^12938402 is an apocalyptic number.

12938402 is a deficient number, since it is larger than the sum of its proper divisors (6488110).

12938402 is a wasteful number, since it uses less digits than its factorization.

12938402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12938402 is about 3596.9990269668. Note that the first 3 decimals coincide. The cubic root of 12938402 is about 234.7615024137.

The spelling of 12938402 in words is "twelve million, nine hundred thirty-eight thousand, four hundred two".