28263743 has 2 divisors, whose sum is σ = 28263744. Its totient is φ = 28263742.

The previous prime is 28263737. The next prime is 28263769. The reversal of 28263743 is 34736282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28263743 - 2²² = 24069439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28263733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14131871 + 14131872.

It is an arithmetic number, because the mean of its divisors is an integer number (14131872).

Almost surely, 2^28263743 is an apocalyptic number.

28263743 is a deficient number, since it is larger than the sum of its proper divisors (1).

28263743 is an equidigital number, since it uses as much as digits as its factorization.

28263743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

The square root of 28263743 is about 5316.3655818614. The cubic root of 28263743 is about 304.6093466683.

The spelling of 28263743 in words is "twenty-eight million, two hundred sixty-three thousand, seven hundred forty-three".