28339037 has 2 divisors, whose sum is σ = 28339038. Its totient is φ = 28339036.

The previous prime is 28339033. The next prime is 28339067. The reversal of 28339037 is 73093382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18028516 + 10310521 = 4246^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 28339037 - 2² = 28339033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28338988 and 28339006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28339033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14169518 + 14169519.

It is an arithmetic number, because the mean of its divisors is an integer number (14169519).

Almost surely, 2^28339037 is an apocalyptic number.

It is an amenable number.

28339037 is a deficient number, since it is larger than the sum of its proper divisors (1).

28339037 is an equidigital number, since it uses as much as digits as its factorization.

28339037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 28339037 is about 5323.4422134555. The cubic root of 28339037 is about 304.8795977327.

The spelling of 28339037 in words is "twenty-eight million, three hundred thirty-nine thousand, thirty-seven".