28637033 has 2 divisors, whose sum is σ = 28637034. Its totient is φ = 28637032.

The previous prime is 28637023. The next prime is 28637039. The reversal of 28637033 is 33073682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 5721664 = 4787^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 28637033 - 2⁴ = 28637017 is a prime.

It is not a weakly prime, because it can be changed into another prime (28637039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14318516 + 14318517.

It is an arithmetic number, because the mean of its divisors is an integer number (14318517).

Almost surely, 2^28637033 is an apocalyptic number.

It is an amenable number.

28637033 is a deficient number, since it is larger than the sum of its proper divisors (1).

28637033 is an equidigital number, since it uses as much as digits as its factorization.

28637033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 28637033 is about 5351.3580519341. The cubic root of 28637033 is about 305.9445162621.

The spelling of 28637033 in words is "twenty-eight million, six hundred thirty-seven thousand, thirty-three".