8404072 has 8 divisors (see below), whose sum is σ = 15757650. Its totient is φ = 4202032.

The previous prime is 8404021. The next prime is 8404111. The reversal of 8404072 is 2704048.

It can be written as a sum of positive squares in only one way, i.e., 8328996 + 75076 = 2886^2 + 274^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525247 + ... + 525262.

Almost surely, 2^8404072 is an apocalyptic number.

It is an amenable number.

8404072 is a deficient number, since it is larger than the sum of its proper divisors (7353578).

8404072 is a wasteful number, since it uses less digits than its factorization.

8404072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050515 (or 1050511 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 8404072 is about 2898.9777508632. The cubic root of 8404072 is about 203.3121134056.

The spelling of 8404072 in words is "eight million, four hundred four thousand, seventy-two".