8642404 has 12 divisors (see below), whose sum is σ = 15337728. Its totient is φ = 4260200.

The previous prime is 8642383. The next prime is 8642429. The reversal of 8642404 is 4042468.

It is a super-2 number, since 2×8642404² = 149382293798432, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 8642404 parts by 4157 straight cuts.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14932 + ... + 15499.

It is an arithmetic number, because the mean of its divisors is an integer number (1278144).

Almost surely, 2^8642404 is an apocalyptic number.

It is an amenable number.

8642404 is a deficient number, since it is larger than the sum of its proper divisors (6695324).

8642404 is a wasteful number, since it uses less digits than its factorization.

8642404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30506 (or 30504 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 8642404 is about 2939.7965916029. The cubic root of 8642404 is about 205.2161432353.

The spelling of 8642404 in words is "eight million, six hundred forty-two thousand, four hundred four".