28637039 has 2 divisors, whose sum is σ = 28637040. Its totient is φ = 28637038.

The previous prime is 28637033. The next prime is 28637057. The reversal of 28637039 is 93073682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28637039 - 2⁴ = 28637023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28636993 and 28637011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28637033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14318519 + 14318520.

It is an arithmetic number, because the mean of its divisors is an integer number (14318520).

Almost surely, 2^28637039 is an apocalyptic number.

28637039 is a deficient number, since it is larger than the sum of its proper divisors (1).

28637039 is an equidigital number, since it uses as much as digits as its factorization.

28637039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 28637039 is about 5351.3586125394. The cubic root of 28637039 is about 305.9445376292.

The spelling of 28637039 in words is "twenty-eight million, six hundred thirty-seven thousand, thirty-nine".