28740743 has 2 divisors, whose sum is σ = 28740744. Its totient is φ = 28740742.

The previous prime is 28740737. The next prime is 28740773. The reversal of 28740743 is 34704782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28740743 - 2¹⁴ = 28724359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28740773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14370371 + 14370372.

It is an arithmetic number, because the mean of its divisors is an integer number (14370372).

Almost surely, 2^28740743 is an apocalyptic number.

28740743 is a deficient number, since it is larger than the sum of its proper divisors (1).

28740743 is an equidigital number, since it uses as much as digits as its factorization.

28740743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 28740743 is about 5361.0393581842. The cubic root of 28740743 is about 306.3134008401.

The spelling of 28740743 in words is "twenty-eight million, seven hundred forty thousand, seven hundred forty-three".