28645937 has 2 divisors, whose sum is σ = 28645938. Its totient is φ = 28645936.

The previous prime is 28645927. The next prime is 28645979. The reversal of 28645937 is 73954682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25391521 + 3254416 = 5039^2 + 1804^2 .

It is a cyclic number.

It is not a de Polignac number, because 28645937 - 2⁸ = 28645681 is a prime.

It is not a weakly prime, because it can be changed into another prime (28645927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14322968 + 14322969.

It is an arithmetic number, because the mean of its divisors is an integer number (14322969).

Almost surely, 2^28645937 is an apocalyptic number.

It is an amenable number.

28645937 is a deficient number, since it is larger than the sum of its proper divisors (1).

28645937 is an equidigital number, since it uses as much as digits as its factorization.

28645937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 28645937 is about 5352.1899256286. The cubic root of 28645937 is about 305.9762216846.

The spelling of 28645937 in words is "twenty-eight million, six hundred forty-five thousand, nine hundred thirty-seven".