45643320 has 96 divisors (see below), whose sum is σ = 156171600. Its totient is φ = 11529216.

The previous prime is 45643307. The next prime is 45643327. The reversal of 45643320 is 2334654.

45643320 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 (45643327) 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 23 ways as a sum of consecutive naturals, for example, 3504 + ... + 10176.

Almost surely, 2^45643320 is an apocalyptic number.

45643320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45643320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78085800).

45643320 is an abundant number, since it is smaller than the sum of its proper divisors (110528280).

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

45643320 is a wasteful number, since it uses less digits than its factorization.

45643320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 45643320 is about 6755.9840141907. The cubic root of 45643320 is about 357.3762950808.

Adding to 45643320 its reverse (2334654), we get a palindrome (47977974).

The spelling of 45643320 in words is "forty-five million, six hundred forty-three thousand, three hundred twenty".