28539037 has 2 divisors, whose sum is σ = 28539038. Its totient is φ = 28539036.

The previous prime is 28539031. The next prime is 28539053. The reversal of 28539037 is 73093582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14295961 + 14243076 = 3781^2 + 3774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28539037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28538987 and 28539005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28539031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14269518 + 14269519.

It is an arithmetic number, because the mean of its divisors is an integer number (14269519).

Almost surely, 2^28539037 is an apocalyptic number.

It is an amenable number.

28539037 is a deficient number, since it is larger than the sum of its proper divisors (1).

28539037 is an equidigital number, since it uses as much as digits as its factorization.

28539037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28539037 is about 5342.1940249302. The cubic root of 28539037 is about 305.5951364606.

The spelling of 28539037 in words is "twenty-eight million, five hundred thirty-nine thousand, thirty-seven".