45185380 has 24 divisors (see below), whose sum is σ = 95833080. Its totient is φ = 17894400.

The previous prime is 45185369. The next prime is 45185381. The reversal of 45185380 is 8358154.

45185380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14182756 + 31002624 = 3766^2 + 5568^2 .

It is not an unprimeable number, because it can be changed into a prime (45185381) 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 7 ways as a sum of consecutive naturals, for example, 9165 + ... + 13204.

It is an arithmetic number, because the mean of its divisors is an integer number (3993045).

Almost surely, 2^45185380 is an apocalyptic number.

It is an amenable number.

45185380 is an abundant number, since it is smaller than the sum of its proper divisors (50647700).

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

45185380 is a wasteful number, since it uses less digits than its factorization.

45185380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22479 (or 22477 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 45185380 is about 6722.0071407281. The cubic root of 45185380 is about 356.1770885977.

The spelling of 45185380 in words is "forty-five million, one hundred eighty-five thousand, three hundred eighty".