28999577 has 2 divisors, whose sum is σ = 28999578. Its totient is φ = 28999576.

The previous prime is 28999549. The next prime is 28999609. The reversal of 28999577 is 77599982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27206656 + 1792921 = 5216^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 28999577 - 2⁶ = 28999513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28992577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14499788 + 14499789.

It is an arithmetic number, because the mean of its divisors is an integer number (14499789).

Almost surely, 2^28999577 is an apocalyptic number.

It is an amenable number.

28999577 is a deficient number, since it is larger than the sum of its proper divisors (1).

28999577 is an equidigital number, since it uses as much as digits as its factorization.

28999577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 56.

The square root of 28999577 is about 5385.1255324273. The cubic root of 28999577 is about 307.2301887797.

The spelling of 28999577 in words is "twenty-eight million, nine hundred ninety-nine thousand, five hundred seventy-seven".