65140032 has 56 divisors (see below), whose sum is σ = 178308000. Its totient is φ = 20962816.

The previous prime is 65140027. The next prime is 65140057. The reversal of 65140032 is 23004156.

It is a happy number.

65140032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65140032² = 8486447537922048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65139990 and 65140008.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 282 + ... + 11417.

Almost surely, 2^65140032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65140032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89154000).

65140032 is an abundant number, since it is smaller than the sum of its proper divisors (113167968).

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

65140032 is a wasteful number, since it uses less digits than its factorization.

65140032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11743 (or 11733 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 65140032 is about 8070.9374920142. The cubic root of 65140032 is about 402.3611022350.

Adding to 65140032 its reverse (23004156), we get a palindrome (88144188).

The spelling of 65140032 in words is "sixty-five million, one hundred forty thousand, thirty-two".