13004406 has 12 divisors (see below), whose sum is σ = 28176252. Its totient is φ = 4334796.

The previous prime is 13004393. The next prime is 13004449. The reversal of 13004406 is 60440031.

It is a super-2 number, since 2×13004406² = 338229150825672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 722467 = 13004406 / (1 + 3 + 0 + 0 + 4 + 4 + 0 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361216 + ... + 361251.

It is an arithmetic number, because the mean of its divisors is an integer number (2348021).

Almost surely, 2^13004406 is an apocalyptic number.

13004406 is an abundant number, since it is smaller than the sum of its proper divisors (15171846).

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

13004406 is a wasteful number, since it uses less digits than its factorization.

13004406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722475 (or 722472 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13004406 is about 3606.1622259682. The cubic root of 13004406 is about 235.1600298245.

Adding to 13004406 its reverse (60440031), we get a palindrome (73444437).

The spelling of 13004406 in words is "thirteen million, four thousand, four hundred six".