28948307 has 2 divisors, whose sum is σ = 28948308. Its totient is φ = 28948306.

The previous prime is 28948303. The next prime is 28948349. The reversal of 28948307 is 70384982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28948307 - 2² = 28948303 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28948301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14474153 + 14474154.

It is an arithmetic number, because the mean of its divisors is an integer number (14474154).

Almost surely, 2^28948307 is an apocalyptic number.

28948307 is a deficient number, since it is larger than the sum of its proper divisors (1).

28948307 is an equidigital number, since it uses as much as digits as its factorization.

28948307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28948307 is about 5380.3630918368. The cubic root of 28948307 is about 307.0490254053.

The spelling of 28948307 in words is "twenty-eight million, nine hundred forty-eight thousand, three hundred seven".