28284371 has 2 divisors, whose sum is σ = 28284372. Its totient is φ = 28284370.

The previous prime is 28284359. The next prime is 28284397. The reversal of 28284371 is 17348282.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28284371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28284071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14142185 + 14142186.

It is an arithmetic number, because the mean of its divisors is an integer number (14142186).

Almost surely, 2^28284371 is an apocalyptic number.

28284371 is a deficient number, since it is larger than the sum of its proper divisors (1).

28284371 is an equidigital number, since it uses as much as digits as its factorization.

28284371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 28284371 is about 5318.3052751793. The cubic root of 28284371 is about 304.6834339725.

The spelling of 28284371 in words is "twenty-eight million, two hundred eighty-four thousand, three hundred seventy-one".