65143128 has 32 divisors (see below), whose sum is σ = 166325760. Its totient is φ = 21252000.

The previous prime is 65143109. The next prime is 65143129. The reversal of 65143128 is 82134156.

It is a junction number, because it is equal to n+sod(n) for n = 65143095 and 65143104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65143129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27748 + ... + 30003.

It is an arithmetic number, because the mean of its divisors is an integer number (5197680).

Almost surely, 2^65143128 is an apocalyptic number.

It is an amenable number.

65143128 is an abundant number, since it is smaller than the sum of its proper divisors (101182632).

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

65143128 is a wasteful number, since it uses less digits than its factorization.

65143128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57807 (or 57803 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 65143128 is about 8071.1292890153. The cubic root of 65143128 is about 402.3674766574.

The spelling of 65143128 in words is "sixty-five million, one hundred forty-three thousand, one hundred twenty-eight".