28146823 has 2 divisors, whose sum is σ = 28146824. Its totient is φ = 28146822.

The previous prime is 28146821. The next prime is 28146827. The reversal of 28146823 is 32864182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28146823 - 2¹ = 28146821 is a prime.

Together with 28146821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28146821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14073411 + 14073412.

It is an arithmetic number, because the mean of its divisors is an integer number (14073412).

Almost surely, 2^28146823 is an apocalyptic number.

28146823 is a deficient number, since it is larger than the sum of its proper divisors (1).

28146823 is an equidigital number, since it uses as much as digits as its factorization.

28146823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 28146823 is about 5305.3579521084. The cubic root of 28146823 is about 304.1887353809.

The spelling of 28146823 in words is "twenty-eight million, one hundred forty-six thousand, eight hundred twenty-three".