28061123 has 2 divisors, whose sum is σ = 28061124. Its totient is φ = 28061122.

The previous prime is 28061093. The next prime is 28061161. The reversal of 28061123 is 32116082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28061123 - 2⁸ = 28060867 is a prime.

It is a super-2 number, since 2×28061123² = 1574853248042258, which contains 22 as substring.

It is equal to p_1745006 and since 28061123 and 1745006 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28061023) 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, 14030561 + 14030562.

It is an arithmetic number, because the mean of its divisors is an integer number (14030562).

Almost surely, 2^28061123 is an apocalyptic number.

28061123 is a deficient number, since it is larger than the sum of its proper divisors (1).

28061123 is an equidigital number, since it uses as much as digits as its factorization.

28061123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28061123 is about 5297.2750542142. The cubic root of 28061123 is about 303.8796954431.

The spelling of 28061123 in words is "twenty-eight million, sixty-one thousand, one hundred twenty-three".