45065728 has 20 divisors (see below), whose sum is σ = 90044460. Its totient is φ = 22532608.

The previous prime is 45065719. The next prime is 45065729. The reversal of 45065728 is 82756054.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45065729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43498 + ... + 44521.

It is an arithmetic number, because the mean of its divisors is an integer number (4502223).

Almost surely, 2^45065728 is an apocalyptic number.

It is an amenable number.

45065728 is a deficient number, since it is larger than the sum of its proper divisors (44978732).

45065728 is an frugal number, since it uses more digits than its factorization.

45065728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88037 (or 88021 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 45065728 is about 6713.1012207474. The cubic root of 45065728 is about 355.8624221159.

The spelling of 45065728 in words is "forty-five million, sixty-five thousand, seven hundred twenty-eight".