4045723236 has 27 divisors (see below), whose sum is σ = 10227654073. Its totient is φ = 1348447200.

The previous prime is 4045723217. The next prime is 4045723247. The reversal of 4045723236 is 6323275404.

The square root of 4045723236 is 63606.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3458145636 + 587577600 = 58806^2 + 24240^2 .

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4045723236.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 376336 + ... + 386936.

Almost surely, 2^4045723236 is an apocalyptic number.

4045723236 is the 63606-th square number.

It is an amenable number.

4045723236 is an abundant number, since it is smaller than the sum of its proper divisors (6181930837).

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

4045723236 is an equidigital number, since it uses as much as digits as its factorization.

4045723236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21212 (or 10606 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The cubic root of 4045723236 is about 1593.4265771582.

Multiplying 4045723236 by its sum of digits (36), we get a square (145646036496 = 381636²).

4045723236 divided by its sum of digits (36) gives a square (112381201 = 10601²).

The spelling of 4045723236 in words is "four billion, forty-five million, seven hundred twenty-three thousand, two hundred thirty-six".