28447007 has 2 divisors, whose sum is σ = 28447008. Its totient is φ = 28447006.

The previous prime is 28446991. The next prime is 28447033. The reversal of 28447007 is 70074482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28447007 - 2⁴ = 28446991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28447607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14223503 + 14223504.

It is an arithmetic number, because the mean of its divisors is an integer number (14223504).

Almost surely, 2^28447007 is an apocalyptic number.

28447007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28447007 is an equidigital number, since it uses as much as digits as its factorization.

28447007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 28447007 is about 5333.5735675061. The cubic root of 28447007 is about 305.2662979280.

The spelling of 28447007 in words is "twenty-eight million, four hundred forty-seven thousand, seven".