65872428 has 24 divisors (see below), whose sum is σ = 156603888. Its totient is φ = 21542976.

The previous prime is 65872403. The next prime is 65872447. The reversal of 65872428 is 82427856.

It is a happy number.

65872428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 65872428.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51151 + ... + 52422.

It is an arithmetic number, because the mean of its divisors is an integer number (6525162).

Almost surely, 2^65872428 is an apocalyptic number.

It is an amenable number.

65872428 is an abundant number, since it is smaller than the sum of its proper divisors (90731460).

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

65872428 is a wasteful number, since it uses less digits than its factorization.

65872428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103633 (or 103631 counting only the distinct ones).

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

The square root of 65872428 is about 8116.1830930555. The cubic root of 65872428 is about 403.8634558001.

The spelling of 65872428 in words is "sixty-five million, eight hundred seventy-two thousand, four hundred twenty-eight".