28065276 has 18 divisors (see below), whose sum is σ = 70942872. Its totient is φ = 9355080.

The previous prime is 28065269. The next prime is 28065281. The reversal of 28065276 is 67256082.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 779591 = 28065276 / (2 + 8 + 0 + 6 + 5 + 2 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 28065276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389760 + ... + 389831.

Almost surely, 2^28065276 is an apocalyptic number.

It is an amenable number.

28065276 is an abundant number, since it is smaller than the sum of its proper divisors (42877596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28065276 is a wasteful number, since it uses less digits than its factorization.

28065276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779601 (or 779596 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 28065276 is about 5297.6670337046. The cubic root of 28065276 is about 303.8946859351.

It can be divided in two parts, 280 and 65276, that added together give a palindrome (65556).

The spelling of 28065276 in words is "twenty-eight million, sixty-five thousand, two hundred seventy-six".