45728660 has 24 divisors (see below), whose sum is σ = 97348776. Its totient is φ = 18040320.

The previous prime is 45728591. The next prime is 45728677. The reversal of 45728660 is 6682754.

It is a happy number.

45728660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6240004 + 39488656 = 2498^2 + 6284^2 .

It is a super-2 number, since 2×45728660² = 4182220690791200, which contains 22 as substring.

It is a congruent number.

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, 14201 + ... + 17120.

It is an arithmetic number, because the mean of its divisors is an integer number (4056199).

Almost surely, 2^45728660 is an apocalyptic number.

It is an amenable number.

45728660 is an abundant number, since it is smaller than the sum of its proper divisors (51620116).

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

45728660 is a wasteful number, since it uses less digits than its factorization.

45728660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31403 (or 31401 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 45728660 is about 6762.2969470440. The cubic root of 45728660 is about 357.5988870170.

The spelling of 45728660 in words is "forty-five million, seven hundred twenty-eight thousand, six hundred sixty".