40045288 has 32 divisors (see below), whose sum is σ = 78489000. Its totient is φ = 19129600.

The previous prime is 40045253. The next prime is 40045301. The reversal of 40045288 is 88254004.

It can be written as a sum of positive squares in 4 ways, for example, as 37478884 + 2566404 = 6122^2 + 1602^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22578 + ... + 24286.

Almost surely, 2^40045288 is an apocalyptic number.

It is an amenable number.

40045288 is a deficient number, since it is larger than the sum of its proper divisors (38443712).

40045288 is a wasteful number, since it uses less digits than its factorization.

40045288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 40045288 is about 6328.1346382643. The cubic root of 40045288 is about 342.1242096398.

The spelling of 40045288 in words is "forty million, forty-five thousand, two hundred eighty-eight".