28934977 has 2 divisors, whose sum is σ = 28934978. Its totient is φ = 28934976.

The previous prime is 28934951. The next prime is 28934981. The reversal of 28934977 is 77943982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27552001 + 1382976 = 5249^2 + 1176^2 .

It is a cyclic number.

It is not a de Polignac number, because 28934977 - 2²³ = 20546369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28934977.

It is not a weakly prime, because it can be changed into another prime (28934947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14467488 + 14467489.

It is an arithmetic number, because the mean of its divisors is an integer number (14467489).

Almost surely, 2^28934977 is an apocalyptic number.

It is an amenable number.

28934977 is a deficient number, since it is larger than the sum of its proper divisors (1).

28934977 is an equidigital number, since it uses as much as digits as its factorization.

28934977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 28934977 is about 5379.1241852183. The cubic root of 28934977 is about 307.0018886026.

The spelling of 28934977 in words is "twenty-eight million, nine hundred thirty-four thousand, nine hundred seventy-seven".