28328572061 has 8 divisors (see below), whose sum is σ = 28370500224. Its totient is φ = 28286677440.

The previous prime is 28328572057. The next prime is 28328572093. The reversal of 28328572061 is 16027582382.

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 28328572061 - 2² = 28328572057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28328574061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030636 + ... + 2044538.

It is an arithmetic number, because the mean of its divisors is an integer number (3546312528).

Almost surely, 2^28328572061 is an apocalyptic number.

It is an amenable number.

28328572061 is a deficient number, since it is larger than the sum of its proper divisors (41928163).

28328572061 is a wasteful number, since it uses less digits than its factorization.

28328572061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16771.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 28328572061 in words is "twenty-eight billion, three hundred twenty-eight million, five hundred seventy-two thousand, sixty-one".