13404506 has 8 divisors (see below), whose sum is σ = 20436564. Its totient is φ = 6592320.

The previous prime is 13404451. The next prime is 13404509. The reversal of 13404506 is 60540431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10182481 + 3222025 = 3191^2 + 1795^2 .

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

It is a super-2 number, since 2×13404506² = 359361562208072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13404509) 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 3 ways as a sum of consecutive naturals, for example, 54815 + ... + 55058.

Almost surely, 2^13404506 is an apocalyptic number.

13404506 is a deficient number, since it is larger than the sum of its proper divisors (7032058).

13404506 is a wasteful number, since it uses less digits than its factorization.

13404506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109936.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13404506 is about 3661.2164645101. The cubic root of 13404506 is about 237.5473944197.

Adding to 13404506 its reverse (60540431), we get a palindrome (73944937).

The spelling of 13404506 in words is "thirteen million, four hundred four thousand, five hundred six".