28483139 has 2 divisors, whose sum is σ = 28483140. Its totient is φ = 28483138.

The previous prime is 28483127. The next prime is 28483171. The reversal of 28483139 is 93138482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28483139 - 2⁴ = 28483123 is a prime.

It is a super-2 number, since 2×28483139² = 1622578414586642, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28483339) 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, 14241569 + 14241570.

It is an arithmetic number, because the mean of its divisors is an integer number (14241570).

Almost surely, 2^28483139 is an apocalyptic number.

28483139 is a deficient number, since it is larger than the sum of its proper divisors (1).

28483139 is an equidigital number, since it uses as much as digits as its factorization.

28483139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 28483139 is about 5336.9597150438. The cubic root of 28483139 is about 305.3954880311.

The spelling of 28483139 in words is "twenty-eight million, four hundred eighty-three thousand, one hundred thirty-nine".