7728280343 has 12 divisors (see below), whose sum is σ = 9463201560. Its totient is φ = 6275595312.

The previous prime is 7728280309. The next prime is 7728280361. The reversal of 7728280343 is 3430828277.

It is not a de Polignac number, because 7728280343 - 2¹⁰ = 7728279319 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7728280294 and 7728280303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7728280303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4149596 + ... + 4151457.

It is an arithmetic number, because the mean of its divisors is an integer number (788600130).

Almost surely, 2^7728280343 is an apocalyptic number.

7728280343 is a deficient number, since it is larger than the sum of its proper divisors (1734921217).

7728280343 is a wasteful number, since it uses less digits than its factorization.

7728280343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8301086 (or 8301079 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 7728280343 is about 87910.6383949064. The cubic root of 7728280343 is about 1977.0953859313.

The spelling of 7728280343 in words is "seven billion, seven hundred twenty-eight million, two hundred eighty thousand, three hundred forty-three".