65428844 has 24 divisors (see below), whose sum is σ = 125335728. Its totient is φ = 29701440.

The previous prime is 65428823. The next prime is 65428861. The reversal of 65428844 is 44882456.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7142 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (5222322).

Almost surely, 2^65428844 is an apocalyptic number.

It is an amenable number.

65428844 is a deficient number, since it is larger than the sum of its proper divisors (59906884).

65428844 is a wasteful number, since it uses less digits than its factorization.

65428844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20705 (or 20703 counting only the distinct ones).

The product of its digits is 245760, while the sum is 41.

The square root of 65428844 is about 8088.8098012007. The cubic root of 65428844 is about 402.9548763480.

The spelling of 65428844 in words is "sixty-five million, four hundred twenty-eight thousand, eight hundred forty-four".