12648404 has 6 divisors (see below), whose sum is σ = 22134714. Its totient is φ = 6324200.

The previous prime is 12648401. The next prime is 12648409. The reversal of 12648404 is 40484621.

It can be written as a sum of positive squares in only one way, i.e., 12264004 + 384400 = 3502^2 + 620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12648401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1581047 + ... + 1581054.

It is an arithmetic number, because the mean of its divisors is an integer number (3689119).

Almost surely, 2^12648404 is an apocalyptic number.

It is an amenable number.

12648404 is a deficient number, since it is larger than the sum of its proper divisors (9486310).

12648404 is a wasteful number, since it uses less digits than its factorization.

12648404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162105 (or 3162103 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 12648404 is about 3556.4594753772. The cubic root of 12648404 is about 232.9942712585.

The spelling of 12648404 in words is "twelve million, six hundred forty-eight thousand, four hundred four".