7728341 has 2 divisors, whose sum is σ = 7728342. Its totient is φ = 7728340.

The previous prime is 7728337. The next prime is 7728349. The reversal of 7728341 is 1438277.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7447441 + 280900 = 2729^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 7728341 - 2² = 7728337 is a prime.

It is a super-2 number, since 2×7728341² = 119454509224562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7728298 and 7728307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7728349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3864170 + 3864171.

It is an arithmetic number, because the mean of its divisors is an integer number (3864171).

Almost surely, 2^7728341 is an apocalyptic number.

It is an amenable number.

7728341 is a deficient number, since it is larger than the sum of its proper divisors (1).

7728341 is an equidigital number, since it uses as much as digits as its factorization.

7728341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 32.

The square root of 7728341 is about 2779.9893884690. The cubic root of 7728341 is about 197.7100558465.

Subtracting from 7728341 its reverse (1438277), we obtain a square (6290064 = 2508²).

The spelling of 7728341 in words is "seven million, seven hundred twenty-eight thousand, three hundred forty-one".