65215928 has 8 divisors (see below), whose sum is σ = 122279880. Its totient is φ = 32607960.

The previous prime is 65215919. The next prime is 65215933. The reversal of 65215928 is 82951256.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 65215891 and 65215900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4075988 + ... + 4076003.

It is an arithmetic number, because the mean of its divisors is an integer number (15284985).

Almost surely, 2^65215928 is an apocalyptic number.

It is an amenable number.

65215928 is a deficient number, since it is larger than the sum of its proper divisors (57063952).

65215928 is a wasteful number, since it uses less digits than its factorization.

65215928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151997 (or 8151993 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 65215928 is about 8075.6379314578. The cubic root of 65215928 is about 402.5173080015.

The spelling of 65215928 in words is "sixty-five million, two hundred fifteen thousand, nine hundred twenty-eight".