28797055 has 12 divisors (see below), whose sum is σ = 40198680. Its totient is φ = 19746384.

The previous prime is 28797053. The next prime is 28797071. The reversal of 28797055 is 55079782.

It is not a de Polignac number, because 28797055 - 2¹ = 28797053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28797053) 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 in 11 ways as a sum of consecutive naturals, for example, 58525 + ... + 59014.

It is an arithmetic number, because the mean of its divisors is an integer number (3349890).

Almost surely, 2^28797055 is an apocalyptic number.

28797055 is a deficient number, since it is larger than the sum of its proper divisors (11401625).

28797055 is a wasteful number, since it uses less digits than its factorization.

28797055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117558 (or 117551 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 28797055 is about 5366.2887548100. The cubic root of 28797055 is about 306.5133245398.

The spelling of 28797055 in words is "twenty-eight million, seven hundred ninety-seven thousand, fifty-five".