28065732 has 24 divisors (see below), whose sum is σ = 66411072. Its totient is φ = 9223200.

The previous prime is 28065677. The next prime is 28065733. The reversal of 28065732 is 23756082.

It is a junction number, because it is equal to n+sod(n) for n = 28065693 and 28065702.

It is not an unprimeable number, because it can be changed into a prime (28065733) 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, 15619 + ... + 17322.

It is an arithmetic number, because the mean of its divisors is an integer number (2767128).

Almost surely, 2^28065732 is an apocalyptic number.

It is an amenable number.

28065732 is an abundant number, since it is smaller than the sum of its proper divisors (38345340).

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

28065732 is a wasteful number, since it uses less digits than its factorization.

28065732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33019 (or 33017 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28065732 is about 5297.7100713421. The cubic root of 28065732 is about 303.8963318032.

The spelling of 28065732 in words is "twenty-eight million, sixty-five thousand, seven hundred thirty-two".