28617755 has 8 divisors (see below), whose sum is σ = 34376832. Its totient is φ = 22870528.

The previous prime is 28617733. The next prime is 28617763. The reversal of 28617755 is 55771682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28617755 - 2⁸ = 28617499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3734 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (4297104).

Almost surely, 2^28617755 is an apocalyptic number.

28617755 is a deficient number, since it is larger than the sum of its proper divisors (5759077).

28617755 is a wasteful number, since it uses less digits than its factorization.

28617755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925.

The product of its digits is 117600, while the sum is 41.

The square root of 28617755 is about 5349.5565236756. The cubic root of 28617755 is about 305.8758485064.

The spelling of 28617755 in words is "twenty-eight million, six hundred seventeen thousand, seven hundred fifty-five".