45643472 has 80 divisors (see below), whose sum is σ = 108028800. Its totient is φ = 18247680.

The previous prime is 45643471. The next prime is 45643489. The reversal of 45643472 is 27434654.

45643472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45643471) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 189272 + ... + 189512.

It is an arithmetic number, because the mean of its divisors is an integer number (1350360).

Almost surely, 2^45643472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45643472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54014400).

45643472 is an abundant number, since it is smaller than the sum of its proper divisors (62385328).

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

45643472 is a wasteful number, since it uses less digits than its factorization.

45643472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 358 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The square root of 45643472 is about 6755.9952634678. The cubic root of 45643472 is about 357.3766917883.

The spelling of 45643472 in words is "forty-five million, six hundred forty-three thousand, four hundred seventy-two".