28016655 has 16 divisors (see below), whose sum is σ = 45226080. Its totient is φ = 14809088.

The previous prime is 28016633. The next prime is 28016657. The reversal of 28016655 is 55661082.

It is a cyclic number.

It is not a de Polignac number, because 28016655 - 2¹² = 28012559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28016657) 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 15 ways as a sum of consecutive naturals, for example, 6570 + ... + 9959.

It is an arithmetic number, because the mean of its divisors is an integer number (2826630).

Almost surely, 2^28016655 is an apocalyptic number.

28016655 is a deficient number, since it is larger than the sum of its proper divisors (17209425).

28016655 is a wasteful number, since it uses less digits than its factorization.

28016655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 28016655 is about 5293.0761377483. The cubic root of 28016655 is about 303.7190928603.

The spelling of 28016655 in words is "twenty-eight million, sixteen thousand, six hundred fifty-five".