65303238 has 128 divisors (see below), whose sum is σ = 178827264. Its totient is φ = 15350400.

The previous prime is 65303219. The next prime is 65303269. The reversal of 65303238 is 83230356.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 498433 + ... + 498563.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 2^65303238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65303238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89413632).

65303238 is an abundant number, since it is smaller than the sum of its proper divisors (113524026).

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

65303238 is a wasteful number, since it uses less digits than its factorization.

65303238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 65303238 is about 8081.0418882716. The cubic root of 65303238 is about 402.6968557265.

It can be divided in two parts, 65 and 303238, that added together give a palindrome (303303).

The spelling of 65303238 in words is "sixty-five million, three hundred three thousand, two hundred thirty-eight".