66044028 has 24 divisors (see below), whose sum is σ = 154373632. Its totient is φ = 21975984.

The previous prime is 66044023. The next prime is 66044039. The reversal of 66044028 is 82044066.

It is a junction number, because it is equal to n+sod(n) for n = 66043986 and 66044004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044023) 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, 2751 + ... + 11817.

Almost surely, 2^66044028 is an apocalyptic number.

It is an amenable number.

66044028 is an abundant number, since it is smaller than the sum of its proper divisors (88329604).

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

66044028 is a wasteful number, since it uses less digits than its factorization.

66044028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681 (or 9679 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 66044028 is about 8126.7476889590. The cubic root of 66044028 is about 404.2138445701.

The spelling of 66044028 in words is "sixty-six million, forty-four thousand, twenty-eight".