28570847 has 2 divisors, whose sum is σ = 28570848. Its totient is φ = 28570846.

The previous prime is 28570837. The next prime is 28570879. The reversal of 28570847 is 74807582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28570847 - 2¹⁰ = 28569823 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 (28570837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14285423 + 14285424.

It is an arithmetic number, because the mean of its divisors is an integer number (14285424).

Almost surely, 2^28570847 is an apocalyptic number.

28570847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28570847 is an equidigital number, since it uses as much as digits as its factorization.

28570847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 28570847 is about 5345.1704369459. The cubic root of 28570847 is about 305.7086344716.

The spelling of 28570847 in words is "twenty-eight million, five hundred seventy thousand, eight hundred forty-seven".