7921736 has 16 divisors (see below), whose sum is σ = 14910000. Its totient is φ = 3945744.

The previous prime is 7921723. The next prime is 7921757. The reversal of 7921736 is 6371297.

It is a junction number, because it is equal to n+sod(n) for n = 7921696 and 7921705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (931875).

Almost surely, 2^7921736 is an apocalyptic number.

It is an amenable number.

7921736 is a deficient number, since it is larger than the sum of its proper divisors (6988264).

7921736 is a wasteful number, since it uses less digits than its factorization.

7921736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 3784 counting only the distinct ones).

The product of its digits is 15876, while the sum is 35.

The square root of 7921736 is about 2814.5578693642. The cubic root of 7921736 is about 199.3456615406.

The spelling of 7921736 in words is "seven million, nine hundred twenty-one thousand, seven hundred thirty-six".