28065758 has 16 divisors (see below), whose sum is σ = 49413984. Its totient is φ = 11702880.

The previous prime is 28065733. The next prime is 28065767. The reversal of 28065758 is 85756082.

It is a super-2 number, since 2×28065758² = 1575373544229128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26573 + ... + 27608.

It is an arithmetic number, because the mean of its divisors is an integer number (3088374).

Almost surely, 2^28065758 is an apocalyptic number.

28065758 is a deficient number, since it is larger than the sum of its proper divisors (21348226).

28065758 is a wasteful number, since it uses less digits than its factorization.

28065758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54227.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 28065758 is about 5297.7125252320. The cubic root of 28065758 is about 303.8964256460.

The spelling of 28065758 in words is "twenty-eight million, sixty-five thousand, seven hundred fifty-eight".