28487941 has 2 divisors, whose sum is σ = 28487942. Its totient is φ = 28487940.

The previous prime is 28487929. The next prime is 28487951. The reversal of 28487941 is 14978482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 6200100 = 4721^2 + 2490^2 .

It is a cyclic number.

It is not a de Polignac number, because 28487941 - 2⁵ = 28487909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28487951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14243970 + 14243971.

It is an arithmetic number, because the mean of its divisors is an integer number (14243971).

Almost surely, 2^28487941 is an apocalyptic number.

It is an amenable number.

28487941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28487941 is an equidigital number, since it uses as much as digits as its factorization.

28487941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 28487941 is about 5337.4095776884. The cubic root of 28487941 is about 305.4126493738.

The spelling of 28487941 in words is "twenty-eight million, four hundred eighty-seven thousand, nine hundred forty-one".