12404072 has 8 divisors (see below), whose sum is σ = 23257650. Its totient is φ = 6202032.

The previous prime is 12404059. The next prime is 12404089. The reversal of 12404072 is 27040421.

12404072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6421156 + 5982916 = 2534^2 + 2446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12404072² = 307722004362368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775247 + ... + 775262.

Almost surely, 2^12404072 is an apocalyptic number.

It is an amenable number.

12404072 is a deficient number, since it is larger than the sum of its proper divisors (10853578).

12404072 is a wasteful number, since it uses less digits than its factorization.

12404072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550515 (or 1550511 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12404072 is about 3521.9415100197. The cubic root of 12404072 is about 231.4842387191.

Adding to 12404072 its reverse (27040421), we get a palindrome (39444493).

The spelling of 12404072 in words is "twelve million, four hundred four thousand, seventy-two".