65039238 has 24 divisors (see below), whose sum is σ = 153729576. Its totient is φ = 19708800.

The previous prime is 65039231. The next prime is 65039267. The reversal of 65039238 is 83293056.

65039238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65039231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164043 + ... + 164438.

It is an arithmetic number, because the mean of its divisors is an integer number (6405399).

Almost surely, 2^65039238 is an apocalyptic number.

65039238 is an abundant number, since it is smaller than the sum of its proper divisors (88690338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65039238 is a wasteful number, since it uses less digits than its factorization.

65039238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328500 (or 328497 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 65039238 is about 8064.6908186241. The cubic root of 65039238 is about 402.1534648345.

The spelling of 65039238 in words is "sixty-five million, thirty-nine thousand, two hundred thirty-eight".