28446137 has 2 divisors, whose sum is σ = 28446138. Its totient is φ = 28446136.

The previous prime is 28446133. The next prime is 28446161. The reversal of 28446137 is 73164482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27836176 + 609961 = 5276^2 + 781^2 .

It is a cyclic number.

It is not a de Polignac number, because 28446137 - 2² = 28446133 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28446097 and 28446106.

It is not a weakly prime, because it can be changed into another prime (28446133) 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, 14223068 + 14223069.

It is an arithmetic number, because the mean of its divisors is an integer number (14223069).

Almost surely, 2^28446137 is an apocalyptic number.

It is an amenable number.

28446137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28446137 is an equidigital number, since it uses as much as digits as its factorization.

28446137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 28446137 is about 5333.4920080563. The cubic root of 28446137 is about 305.2631858914.

The spelling of 28446137 in words is "twenty-eight million, four hundred forty-six thousand, one hundred thirty-seven".