28070410261 has 12 divisors (see below), whose sum is σ = 28503441100. Its totient is φ = 27643855680.

The previous prime is 28070410259. The next prime is 28070410267. The reversal of 28070410261 is 16201407082.

It can be written as a sum of positive squares in 2 ways, for example, as 22125075025 + 5945335236 = 148745^2 + 77106^2 .

It is not a de Polignac number, because 28070410261 - 2¹ = 28070410259 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 (28070410267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5386225 + ... + 5391433.

Almost surely, 2^28070410261 is an apocalyptic number.

It is an amenable number.

28070410261 is a deficient number, since it is larger than the sum of its proper divisors (433030839).

28070410261 is an equidigital number, since it uses as much as digits as its factorization.

28070410261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420 (or 6349 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 28070410261 in words is "twenty-eight billion, seventy million, four hundred ten thousand, two hundred sixty-one".