45180728 has 8 divisors (see below), whose sum is σ = 84713880. Its totient is φ = 22590360.

The previous prime is 45180719. The next prime is 45180731. The reversal of 45180728 is 82708154.

45180728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 2823788 + ... + 2823803.

It is an arithmetic number, because the mean of its divisors is an integer number (10589235).

Almost surely, 2^45180728 is an apocalyptic number.

It is an amenable number.

45180728 is a deficient number, since it is larger than the sum of its proper divisors (39533152).

45180728 is a wasteful number, since it uses less digits than its factorization.

45180728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647597 (or 5647593 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 45180728 is about 6721.6611042212. The cubic root of 45180728 is about 356.1648649339.

The spelling of 45180728 in words is "forty-five million, one hundred eighty thousand, seven hundred twenty-eight".