65128072 has 16 divisors (see below), whose sum is σ = 122328000. Its totient is φ = 32507280.

The previous prime is 65128061. The next prime is 65128073. The reversal of 65128072 is 27082156.

It is not an unprimeable number, because it can be changed into a prime (65128073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004 + ... + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (7645500).

Almost surely, 2^65128072 is an apocalyptic number.

It is an amenable number.

65128072 is a deficient number, since it is larger than the sum of its proper divisors (57199928).

65128072 is a wasteful number, since it uses less digits than its factorization.

65128072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14196 (or 14192 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 65128072 is about 8070.1965279663. The cubic root of 65128072 is about 402.3364756309.

The spelling of 65128072 in words is "sixty-five million, one hundred twenty-eight thousand, seventy-two".