45243732 has 48 divisors (see below), whose sum is σ = 112698432. Its totient is φ = 14077440.

The previous prime is 45243727. The next prime is 45243743. The reversal of 45243732 is 23734254.

45243732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 45243732.

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, 25878 + ... + 27570.

It is an arithmetic number, because the mean of its divisors is an integer number (2347884).

Almost surely, 2^45243732 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 45243732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56349216).

45243732 is an abundant number, since it is smaller than the sum of its proper divisors (67454700).

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

45243732 is a wasteful number, since it uses less digits than its factorization.

45243732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848 (or 1846 counting only the distinct ones).

The product of its digits is 20160, while the sum is 30.

The square root of 45243732 is about 6726.3461106309. The cubic root of 45243732 is about 356.3303439596.

Adding to 45243732 its reverse (23734254), we get a palindrome (68977986).

It can be divided in two parts, 4524 and 3732, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 45243732 in words is "forty-five million, two hundred forty-three thousand, seven hundred thirty-two".