45038340 has 72 divisors (see below), whose sum is σ = 139223448. Its totient is φ = 11781120.

The previous prime is 45038293. The next prime is 45038351. The reversal of 45038340 is 4383054.

It is a happy number.

45038340 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 8749764 + 36288576 = 2958^2 + 6024^2 .

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 23 ways as a sum of consecutive naturals, for example, 7180 + ... + 11900.

It is an arithmetic number, because the mean of its divisors is an integer number (1933659).

Almost surely, 2^45038340 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 45038340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69611724).

45038340 is an abundant number, since it is smaller than the sum of its proper divisors (94185108).

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

45038340 is a wasteful number, since it uses less digits than its factorization.

45038340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789 (or 4784 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 45038340 is about 6711.0610189448. The cubic root of 45038340 is about 355.7903175439.

The spelling of 45038340 in words is "forty-five million, thirty-eight thousand, three hundred forty".