45218840 has 16 divisors (see below), whose sum is σ = 101742480. Its totient is φ = 18087520.

The previous prime is 45218819. The next prime is 45218909. The reversal of 45218840 is 4881254.

It is a happy number.

45218840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 45218797 and 45218806.

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 in 3 ways as a sum of consecutive naturals, for example, 565196 + ... + 565275.

It is an arithmetic number, because the mean of its divisors is an integer number (6358905).

Almost surely, 2^45218840 is an apocalyptic number.

45218840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45218840 is an abundant number, since it is smaller than the sum of its proper divisors (56523640).

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

45218840 is a wasteful number, since it uses less digits than its factorization.

45218840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130482 (or 1130478 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 45218840 is about 6724.4955201115. The cubic root of 45218840 is about 356.2649838778.

The spelling of 45218840 in words is "forty-five million, two hundred eighteen thousand, eight hundred forty".