45391808 has 112 divisors (see below), whose sum is σ = 114897408. Its totient is φ = 17280000.

The previous prime is 45391783. The next prime is 45391813. The reversal of 45391808 is 80819354.

45391808 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 (112).

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 15 ways as a sum of consecutive naturals, for example, 300533 + ... + 300683.

Almost surely, 2^45391808 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 45391808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57448704).

45391808 is an abundant number, since it is smaller than the sum of its proper divisors (69505600).

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

45391808 is a wasteful number, since it uses less digits than its factorization.

45391808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 45391808 is about 6737.3442839148. The cubic root of 45391808 is about 356.7186593589.

The spelling of 45391808 in words is "forty-five million, three hundred ninety-one thousand, eight hundred eight".