13404788 has 6 divisors (see below), whose sum is σ = 23458386. Its totient is φ = 6702392.

The previous prime is 13404763. The next prime is 13404829. The reversal of 13404788 is 88740431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 169744 = 3638^2 + 412^2 .

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 as a sum of consecutive naturals, namely, 1675595 + ... + 1675602.

It is an arithmetic number, because the mean of its divisors is an integer number (3909731).

Almost surely, 2^13404788 is an apocalyptic number.

It is an amenable number.

13404788 is a deficient number, since it is larger than the sum of its proper divisors (10053598).

13404788 is a wasteful number, since it uses less digits than its factorization.

13404788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351201 (or 3351199 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 13404788 is about 3661.2549760977. The cubic root of 13404788 is about 237.5490602251.

The spelling of 13404788 in words is "thirteen million, four hundred four thousand, seven hundred eighty-eight".