45643980 has 96 divisors (see below), whose sum is σ = 137398464. Its totient is φ = 11280384.

The previous prime is 45643967. The next prime is 45643987. The reversal of 45643980 is 8934654.

45643980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (45643987) 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 31 ways as a sum of consecutive naturals, for example, 74154 + ... + 74766.

It is an arithmetic number, because the mean of its divisors is an integer number (1431234).

Almost surely, 2^45643980 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 45643980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68699232).

45643980 is an abundant number, since it is smaller than the sum of its proper divisors (91754484).

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

45643980 is a wasteful number, since it uses less digits than its factorization.

45643980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 45643980 is about 6756.0328596004. The cubic root of 45643980 is about 357.3780176200.

The spelling of 45643980 in words is "forty-five million, six hundred forty-three thousand, nine hundred eighty".