45489840 has 80 divisors (see below), whose sum is σ = 153847296. Its totient is φ = 11027200.

The previous prime is 45489833. The next prime is 45489853. The reversal of 45489840 is 4898454.

45489840 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 (80).

It is a junction number, because it is equal to n+sod(n) for n = 45489792 and 45489801.

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 15 ways as a sum of consecutive naturals, for example, 5976 + ... + 11255.

Almost surely, 2^45489840 is an apocalyptic number.

45489840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45489840 is an abundant number, since it is smaller than the sum of its proper divisors (108357456).

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

45489840 is a wasteful number, since it uses less digits than its factorization.

45489840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17258 (or 17252 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 45489840 is about 6744.6156302639. The cubic root of 45489840 is about 356.9752746727.

The spelling of 45489840 in words is "forty-five million, four hundred eighty-nine thousand, eight hundred forty".