28877573 has 2 divisors, whose sum is σ = 28877574. Its totient is φ = 28877572.

The previous prime is 28877567. The next prime is 28877593. The reversal of 28877573 is 37577882.

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., 27384289 + 1493284 = 5233^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 28877573 - 2⁴ = 28877557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28877593) 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, 14438786 + 14438787.

It is an arithmetic number, because the mean of its divisors is an integer number (14438787).

Almost surely, 2^28877573 is an apocalyptic number.

It is an amenable number.

28877573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28877573 is an equidigital number, since it uses as much as digits as its factorization.

28877573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 47.

The square root of 28877573 is about 5373.7857233053. The cubic root of 28877573 is about 306.7987342053.

The spelling of 28877573 in words is "twenty-eight million, eight hundred seventy-seven thousand, five hundred seventy-three".