65728842 has 32 divisors (see below), whose sum is σ = 136491264. Its totient is φ = 21086400.

The previous prime is 65728841. The next prime is 65728907. The reversal of 65728842 is 24882756.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 65728794 and 65728803.

It is not an unprimeable number, because it can be changed into a prime (65728841) 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, 15292 + ... + 19112.

It is an arithmetic number, because the mean of its divisors is an integer number (4265352).

Almost surely, 2^65728842 is an apocalyptic number.

65728842 is an abundant number, since it is smaller than the sum of its proper divisors (70762422).

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

65728842 is a wasteful number, since it uses less digits than its factorization.

65728842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its digits is 215040, while the sum is 42.

The square root of 65728842 is about 8107.3326069676. The cubic root of 65728842 is about 403.5698006998.

The spelling of 65728842 in words is "sixty-five million, seven hundred twenty-eight thousand, eight hundred forty-two".