28610641 has 2 divisors, whose sum is σ = 28610642. Its totient is φ = 28610640.

The previous prime is 28610633. The next prime is 28610651. The reversal of 28610641 is 14601682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 41616 = 5345^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 28610641 - 2³ = 28610633 is a prime.

It is not a weakly prime, because it can be changed into another prime (28610611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14305320 + 14305321.

It is an arithmetic number, because the mean of its divisors is an integer number (14305321).

Almost surely, 2^28610641 is an apocalyptic number.

It is an amenable number.

28610641 is a deficient number, since it is larger than the sum of its proper divisors (1).

28610641 is an equidigital number, since it uses as much as digits as its factorization.

28610641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28610641 is about 5348.8915674184. The cubic root of 28610641 is about 305.8505008260.

The spelling of 28610641 in words is "twenty-eight million, six hundred ten thousand, six hundred forty-one".