28038065 has 8 divisors (see below), whose sum is σ = 36704448. Its totient is φ = 20391280.

The previous prime is 28038029. The next prime is 28038067. The reversal of 28038065 is 56083082.

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

It is not a de Polignac number, because 28038065 - 2⁶ = 28038001 is a prime.

It is a super-2 number, since 2×28038065² = 1572266177888450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28038067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254837 + ... + 254946.

It is an arithmetic number, because the mean of its divisors is an integer number (4588056).

Almost surely, 2^28038065 is an apocalyptic number.

It is an amenable number.

28038065 is a deficient number, since it is larger than the sum of its proper divisors (8666383).

28038065 is a wasteful number, since it uses less digits than its factorization.

28038065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509799.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28038065 is about 5295.0982049439. The cubic root of 28038065 is about 303.7964393538.

The spelling of 28038065 in words is "twenty-eight million, thirty-eight thousand, sixty-five".