28827030061 has 4 divisors (see below), whose sum is σ = 28827423900. Its totient is φ = 28826636224.

The previous prime is 28827030049. The next prime is 28827030073. The reversal of 28827030061 is 16003072882.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28827030049) and next prime (28827030073).

It can be written as a sum of positive squares in 2 ways, for example, as 19319610025 + 9507420036 = 138995^2 + 97506^2 .

It is a cyclic number.

It is not a de Polignac number, because 28827030061 - 2¹⁵ = 28826997293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28827030061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28827030041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51166 + ... + 245503.

It is an arithmetic number, because the mean of its divisors is an integer number (7206855975).

Almost surely, 2^28827030061 is an apocalyptic number.

It is an amenable number.

28827030061 is a deficient number, since it is larger than the sum of its proper divisors (393839).

28827030061 is an equidigital number, since it uses as much as digits as its factorization.

28827030061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393838.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 28827030061 in words is "twenty-eight billion, eight hundred twenty-seven million, thirty thousand, sixty-one".