2728543 has 2 divisors, whose sum is σ = 2728544. Its totient is φ = 2728542.

The previous prime is 2728541. The next prime is 2728547. The reversal of 2728543 is 3458272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2728543 - 2¹ = 2728541 is a prime.

Together with 2728541, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹⁴ + 7⁴ + 2¹⁶ + 8⁷ + 5⁶ + 4 + 3¹² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2728541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364271 + 1364272.

It is an arithmetic number, because the mean of its divisors is an integer number (1364272).

2^2728543 is an apocalyptic number.

2728543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728543 is an equidigital number, since it uses as much as digits as its factorization.

2728543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 2728543 is about 1651.8301970844. The cubic root of 2728543 is about 139.7366307083.

It can be divided in two parts, 27 and 28543, that multiplied together give a triangular number (770661 = T₁₂₄₁).

The spelling of 2728543 in words is "two million, seven hundred twenty-eight thousand, five hundred forty-three".