45349920 has 288 divisors, whose sum is σ = 193415040. Its totient is φ = 9400320.

The previous prime is 45349919. The next prime is 45349933. The reversal of 45349920 is 2994354.

45349920 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 (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 47 ways as a sum of consecutive naturals, for example, 110676 + ... + 111084.

It is an arithmetic number, because the mean of its divisors is an integer number (671580).

Almost surely, 2^45349920 is an apocalyptic number.

45349920 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 45349920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96707520).

45349920 is an abundant number, since it is smaller than the sum of its proper divisors (148065120).

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

45349920 is a wasteful number, since it uses less digits than its factorization.

45349920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 45349920 is about 6734.2349231371. The cubic root of 45349920 is about 356.6088977778.

The spelling of 45349920 in words is "forty-five million, three hundred forty-nine thousand, nine hundred twenty".