28551065 has 8 divisors (see below), whose sum is σ = 34292160. Its totient is φ = 22820272.

The previous prime is 28551023. The next prime is 28551101. The reversal of 28551065 is 56015582.

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 28551065 - 2⁶ = 28551001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6332 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 2^28551065 is an apocalyptic number.

It is an amenable number.

28551065 is a deficient number, since it is larger than the sum of its proper divisors (5741095).

28551065 is a wasteful number, since it uses less digits than its factorization.

28551065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 28551065 is about 5343.3196610347. The cubic root of 28551065 is about 305.6380622495.

The spelling of 28551065 in words is "twenty-eight million, five hundred fifty-one thousand, sixty-five".