28313723 has 2 divisors, whose sum is σ = 28313724. Its totient is φ = 28313722.

The previous prime is 28313717. The next prime is 28313741. The reversal of 28313723 is 32731382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28313723 - 2¹⁰ = 28312699 is a prime.

It is not a weakly prime, because it can be changed into another prime (28318723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14156861 + 14156862.

It is an arithmetic number, because the mean of its divisors is an integer number (14156862).

Almost surely, 2^28313723 is an apocalyptic number.

28313723 is a deficient number, since it is larger than the sum of its proper divisors (1).

28313723 is an equidigital number, since it uses as much as digits as its factorization.

28313723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 28313723 is about 5321.0640853123. The cubic root of 28313723 is about 304.7887922331.

The spelling of 28313723 in words is "twenty-eight million, three hundred thirteen thousand, seven hundred twenty-three".