28346147 has 2 divisors, whose sum is σ = 28346148. Its totient is φ = 28346146.

The previous prime is 28346113. The next prime is 28346161. The reversal of 28346147 is 74164382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28346147 - 2¹² = 28342051 is a prime.

It is not a weakly prime, because it can be changed into another prime (28346167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14173073 + 14173074.

It is an arithmetic number, because the mean of its divisors is an integer number (14173074).

Almost surely, 2^28346147 is an apocalyptic number.

28346147 is a deficient number, since it is larger than the sum of its proper divisors (1).

28346147 is an equidigital number, since it uses as much as digits as its factorization.

28346147 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 28346147 is about 5324.1099725682. The cubic root of 28346147 is about 304.9050927496.

The spelling of 28346147 in words is "twenty-eight million, three hundred forty-six thousand, one hundred forty-seven".