28742867 has 2 divisors, whose sum is σ = 28742868. Its totient is φ = 28742866.

The previous prime is 28742863. The next prime is 28742873. The reversal of 28742867 is 76824782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28742867 - 2² = 28742863 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28742863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14371433 + 14371434.

It is an arithmetic number, because the mean of its divisors is an integer number (14371434).

Almost surely, 2^28742867 is an apocalyptic number.

28742867 is a deficient number, since it is larger than the sum of its proper divisors (1).

28742867 is an equidigital number, since it uses as much as digits as its factorization.

28742867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 44.

The square root of 28742867 is about 5361.2374504400. The cubic root of 28742867 is about 306.3209463842.

The spelling of 28742867 in words is "twenty-eight million, seven hundred forty-two thousand, eight hundred sixty-seven".