28610401 has 2 divisors, whose sum is σ = 28610402. Its totient is φ = 28610400.

The previous prime is 28610389. The next prime is 28610411. The reversal of 28610401 is 10401682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19368801 + 9241600 = 4401^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 28610401 - 2¹³ = 28602209 is a prime.

It is not a weakly prime, because it can be changed into another prime (28610411) 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 as a sum of consecutive naturals, namely, 14305200 + 14305201.

It is an arithmetic number, because the mean of its divisors is an integer number (14305201).

Almost surely, 2^28610401 is an apocalyptic number.

It is an amenable number.

28610401 is a deficient number, since it is larger than the sum of its proper divisors (1).

28610401 is an equidigital number, since it uses as much as digits as its factorization.

28610401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28610401 is about 5348.8691328168. The cubic root of 28610401 is about 305.8496456160.

The spelling of 28610401 in words is "twenty-eight million, six hundred ten thousand, four hundred one".