28602561 has 8 divisors (see below), whose sum is σ = 41070400. Its totient is φ = 17601552.

The previous prime is 28602533. The next prime is 28602617. The reversal of 28602561 is 16520682.

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

It is not a de Polignac number, because 28602561 - 2⁵ = 28602529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28602521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366661 + ... + 366738.

It is an arithmetic number, because the mean of its divisors is an integer number (5133800).

Almost surely, 2^28602561 is an apocalyptic number.

It is an amenable number.

28602561 is a deficient number, since it is larger than the sum of its proper divisors (12467839).

28602561 is a wasteful number, since it uses less digits than its factorization.

28602561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733415.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28602561 is about 5348.1362174126. The cubic root of 28602561 is about 305.8217061231.

The spelling of 28602561 in words is "twenty-eight million, six hundred two thousand, five hundred sixty-one".