65133528 has 64 divisors (see below), whose sum is σ = 173352960. Its totient is φ = 20322816.

The previous prime is 65133527. The next prime is 65133529. The reversal of 65133528 is 82533156.

It is an interprime number because it is at equal distance from previous prime (65133527) and next prime (65133529).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65133527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107001 + ... + 107607.

It is an arithmetic number, because the mean of its divisors is an integer number (2708640).

Almost surely, 2^65133528 is an apocalyptic number.

65133528 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65133528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86676480).

65133528 is an abundant number, since it is smaller than the sum of its proper divisors (108219432).

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

65133528 is a wasteful number, since it uses less digits than its factorization.

65133528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 892 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 65133528 is about 8070.5345547863. The cubic root of 65133528 is about 402.3477103487.

The spelling of 65133528 in words is "sixty-five million, one hundred thirty-three thousand, five hundred twenty-eight".