28974377 has 2 divisors, whose sum is σ = 28974378. Its totient is φ = 28974376.

The previous prime is 28974349. The next prime is 28974383. The reversal of 28974377 is 77347982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28847641 + 126736 = 5371^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 28974377 - 2²² = 24780073 is a prime.

It is not a weakly prime, because it can be changed into another prime (28974317) 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, 14487188 + 14487189.

It is an arithmetic number, because the mean of its divisors is an integer number (14487189).

Almost surely, 2^28974377 is an apocalyptic number.

It is an amenable number.

28974377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28974377 is an equidigital number, since it uses as much as digits as its factorization.

28974377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 47.

The square root of 28974377 is about 5382.7852455769. The cubic root of 28974377 is about 307.1411708785.

The spelling of 28974377 in words is "twenty-eight million, nine hundred seventy-four thousand, three hundred seventy-seven".