7728346 has 8 divisors (see below), whose sum is σ = 11607264. Its totient is φ = 3859260.

The previous prime is 7728341. The next prime is 7728349. The reversal of 7728346 is 6438277.

7728346 is a nontrivial binomial coefficient, being equal to C(3932, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7728341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 3931.

It is an arithmetic number, because the mean of its divisors is an integer number (1450908).

Almost surely, 2^7728346 is an apocalyptic number.

7728346 is the 3931-st triangular number and also the 1966-th hexagonal number.

7728346 is the 1311-st centered nonagonal number.

7728346 is a deficient number, since it is larger than the sum of its proper divisors (3878918).

7728346 is a wasteful number, since it uses less digits than its factorization.

7728346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916.

The product of its digits is 56448, while the sum is 37.

The square root of 7728346 is about 2779.9902877528. The cubic root of 7728346 is about 197.7100984839.

The spelling of 7728346 in words is "seven million, seven hundred twenty-eight thousand, three hundred forty-six".