65408028 has 24 divisors (see below), whose sum is σ = 174421632. Its totient is φ = 18687984.

The previous prime is 65408023. The next prime is 65408029. The reversal of 65408028 is 82080456.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 65408028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65408023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389250 + ... + 389417.

It is an arithmetic number, because the mean of its divisors is an integer number (7267568).

Almost surely, 2^65408028 is an apocalyptic number.

It is an amenable number.

65408028 is an abundant number, since it is smaller than the sum of its proper divisors (109013604).

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

65408028 is a wasteful number, since it uses less digits than its factorization.

65408028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778681 (or 778679 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 65408028 is about 8087.5229829658. The cubic root of 65408028 is about 402.9121388341.

The spelling of 65408028 in words is "sixty-five million, four hundred eight thousand, twenty-eight".