28606655 has 32 divisors (see below), whose sum is σ = 43476480. Its totient is φ = 17550720.

The previous prime is 28606651. The next prime is 28606667. The reversal of 28606655 is 55660682.

It is a happy number.

It is not a de Polignac number, because 28606655 - 2² = 28606651 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28606651) 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 in 31 ways as a sum of consecutive naturals, for example, 25241 + ... + 26349.

It is an arithmetic number, because the mean of its divisors is an integer number (1358640).

Almost surely, 2^28606655 is an apocalyptic number.

28606655 is a deficient number, since it is larger than the sum of its proper divisors (14869825).

28606655 is a wasteful number, since it uses less digits than its factorization.

28606655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 28606655 is about 5348.5189538787. The cubic root of 28606655 is about 305.8362965921.

The spelling of 28606655 in words is "twenty-eight million, six hundred six thousand, six hundred fifty-five".