28882177 has 4 divisors (see below), whose sum is σ = 29049300. Its totient is φ = 28715056.

The previous prime is 28882171. The next prime is 28882207. The reversal of 28882177 is 77128882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77128882 = 2 ⋅38564441.

It can be written as a sum of positive squares in 2 ways, for example, as 21864976 + 7017201 = 4676^2 + 2649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28882177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28882171) 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 in 3 ways as a sum of consecutive naturals, for example, 83302 + ... + 83647.

It is an arithmetic number, because the mean of its divisors is an integer number (7262325).

Almost surely, 2^28882177 is an apocalyptic number.

It is an amenable number.

28882177 is a deficient number, since it is larger than the sum of its proper divisors (167123).

28882177 is a wasteful number, since it uses less digits than its factorization.

28882177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167122.

The product of its digits is 100352, while the sum is 43.

The square root of 28882177 is about 5374.2140820775. The cubic root of 28882177 is about 306.8150378182.

The spelling of 28882177 in words is "twenty-eight million, eight hundred eighty-two thousand, one hundred seventy-seven".