30228287 has 2 divisors, whose sum is σ = 30228288. Its totient is φ = 30228286.

The previous prime is 30228281. The next prime is 30228307. The reversal of 30228287 is 78282203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30228287 - 2¹² = 30224191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30228281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15114143 + 15114144.

It is an arithmetic number, because the mean of its divisors is an integer number (15114144).

Almost surely, 2^30228287 is an apocalyptic number.

30228287 is a deficient number, since it is larger than the sum of its proper divisors (1).

30228287 is an equidigital number, since it uses as much as digits as its factorization.

30228287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 30228287 is about 5498.0257365713. The cubic root of 30228287 is about 311.5094162581.

The spelling of 30228287 in words is "thirty million, two hundred twenty-eight thousand, two hundred eighty-seven".