28536965 has 8 divisors (see below), whose sum is σ = 36258840. Its totient is φ = 21486592.

The previous prime is 28536929. The next prime is 28536971. The reversal of 28536965 is 56963582.

It is a happy number.

It is a Cunningham number, because it is equal to 5342²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 669124 + 27867841 = 818^2 + 5279^2 .

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 28536965 - 2⁶ = 28536901 is a prime.

It is a super-2 number, since 2×28536965² = 1628716742822450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 167780 + ... + 167949.

It is an arithmetic number, because the mean of its divisors is an integer number (4532355).

Almost surely, 2^28536965 is an apocalyptic number.

It is an amenable number.

28536965 is a deficient number, since it is larger than the sum of its proper divisors (7721875).

28536965 is a wasteful number, since it uses less digits than its factorization.

28536965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335751.

The product of its digits is 388800, while the sum is 44.

The square root of 28536965 is about 5342.0000935979. Note that the first 4 decimals coincide. The cubic root of 28536965 is about 305.5877406440.

The spelling of 28536965 in words is "twenty-eight million, five hundred thirty-six thousand, nine hundred sixty-five".