28144463 has 2 divisors, whose sum is σ = 28144464. Its totient is φ = 28144462.

The previous prime is 28144451. The next prime is 28144477. The reversal of 28144463 is 36444182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28144463 - 2¹⁰ = 28143439 is a prime.

It is a super-2 number, since 2×28144463² = 1584221595116738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28144483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14072231 + 14072232.

It is an arithmetic number, because the mean of its divisors is an integer number (14072232).

Almost surely, 2^28144463 is an apocalyptic number.

28144463 is a deficient number, since it is larger than the sum of its proper divisors (1).

28144463 is an equidigital number, since it uses as much as digits as its factorization.

28144463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 32.

The square root of 28144463 is about 5305.1355307852. The cubic root of 28144463 is about 304.1802334684.

It can be divided in two parts, 281 and 44463, that added together give a palindrome (44744).

The spelling of 28144463 in words is "twenty-eight million, one hundred forty-four thousand, four hundred sixty-three".