28995877 has 2 divisors, whose sum is σ = 28995878. Its totient is φ = 28995876.

The previous prime is 28995871. The next prime is 28995887. The reversal of 28995877 is 77859982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21077281 + 7918596 = 4591^2 + 2814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28995877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28995871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14497938 + 14497939.

It is an arithmetic number, because the mean of its divisors is an integer number (14497939).

Almost surely, 2^28995877 is an apocalyptic number.

It is an amenable number.

28995877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28995877 is an equidigital number, since it uses as much as digits as its factorization.

28995877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The square root of 28995877 is about 5384.7819825876. The cubic root of 28995877 is about 307.2171219219.

The spelling of 28995877 in words is "twenty-eight million, nine hundred ninety-five thousand, eight hundred seventy-seven".