28867877 has 2 divisors, whose sum is σ = 28867878. Its totient is φ = 28867876.

The previous prime is 28867873. The next prime is 28867901. The reversal of 28867877 is 77876882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28718881 + 148996 = 5359^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 28867877 - 2² = 28867873 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 (28867873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14433938 + 14433939.

It is an arithmetic number, because the mean of its divisors is an integer number (14433939).

Almost surely, 2^28867877 is an apocalyptic number.

It is an amenable number.

28867877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28867877 is an equidigital number, since it uses as much as digits as its factorization.

28867877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2107392, while the sum is 53.

The square root of 28867877 is about 5372.8834902685. The cubic root of 28867877 is about 306.7643932132.

The spelling of 28867877 in words is "twenty-eight million, eight hundred sixty-seven thousand, eight hundred seventy-seven".