28130063 has 4 divisors (see below), whose sum is σ = 30293928. Its totient is φ = 25966200.

The previous prime is 28130033. The next prime is 28130093. The reversal of 28130063 is 36003182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36003182 = 2 ⋅18001591.

It is an interprime number because it is at equal distance from previous prime (28130033) and next prime (28130093).

It is not a de Polignac number, because 28130063 - 2⁶ = 28129999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28130033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081913 + ... + 1081938.

It is an arithmetic number, because the mean of its divisors is an integer number (7573482).

Almost surely, 2^28130063 is an apocalyptic number.

28130063 is a deficient number, since it is larger than the sum of its proper divisors (2163865).

28130063 is a wasteful number, since it uses less digits than its factorization.

28130063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163864.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 28130063 is about 5303.7781816362. The cubic root of 28130063 is about 304.1283470919.

The spelling of 28130063 in words is "twenty-eight million, one hundred thirty thousand, sixty-three".