28537741 has 2 divisors, whose sum is σ = 28537742. Its totient is φ = 28537740.

The previous prime is 28537739. The next prime is 28537771. The reversal of 28537741 is 14773582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26563716 + 1974025 = 5154^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 28537741 - 2¹ = 28537739 is a prime.

It is a super-2 number, since 2×28537741² = 1628805322766162, which contains 22 as substring.

Together with 28537739, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28537741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28537771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14268870 + 14268871.

It is an arithmetic number, because the mean of its divisors is an integer number (14268871).

Almost surely, 2^28537741 is an apocalyptic number.

It is an amenable number.

28537741 is a deficient number, since it is larger than the sum of its proper divisors (1).

28537741 is an equidigital number, since it uses as much as digits as its factorization.

28537741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 28537741 is about 5342.0727250759. The cubic root of 28537741 is about 305.5905105477.

The spelling of 28537741 in words is "twenty-eight million, five hundred thirty-seven thousand, seven hundred forty-one".