65030238 has 144 divisors (see below), whose sum is σ = 184373280. Its totient is φ = 16111872.

The previous prime is 65030237. The next prime is 65030239. The reversal of 65030238 is 83203056.

65030238 is a `hidden beast` number, since 650 + 3 + 0 + 2 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (65030237) and next prime (65030239).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65030237) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1757556 + ... + 1757592.

It is an arithmetic number, because the mean of its divisors is an integer number (1280370).

Almost surely, 2^65030238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65030238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92186640).

65030238 is an abundant number, since it is smaller than the sum of its proper divisors (119343042).

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

65030238 is a wasteful number, since it uses less digits than its factorization.

65030238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 65030238 is about 8064.1328114063. The cubic root of 65030238 is about 402.1349142474.

The spelling of 65030238 in words is "sixty-five million, thirty thousand, two hundred thirty-eight".