45438732 has 60 divisors (see below), whose sum is σ = 120849960. Its totient is φ = 14883264.

The previous prime is 45438719. The next prime is 45438751. The reversal of 45438732 is 23783454.

It is a happy number.

45438732 is a `hidden beast` number, since 4 + 543 + 87 + 32 = 666.

45438732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 19 ways as a sum of consecutive naturals, for example, 17928 + ... + 20304.

It is an arithmetic number, because the mean of its divisors is an integer number (2014166).

Almost surely, 2^45438732 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 45438732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60424980).

45438732 is an abundant number, since it is smaller than the sum of its proper divisors (75411228).

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

45438732 is a wasteful number, since it uses less digits than its factorization.

45438732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452 (or 2441 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 45438732 is about 6740.8257654385. The cubic root of 45438732 is about 356.8415369039.

The spelling of 45438732 in words is "forty-five million, four hundred thirty-eight thousand, seven hundred thirty-two".