40045752 has 80 divisors (see below), whose sum is σ = 116087400. Its totient is φ = 12882240.

The previous prime is 40045741. The next prime is 40045777. The reversal of 40045752 is 25754004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 17727 + ... + 19857.

Almost surely, 2^40045752 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 40045752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58043700).

40045752 is an abundant number, since it is smaller than the sum of its proper divisors (76041648).

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

40045752 is a wasteful number, since it uses less digits than its factorization.

40045752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 40045752 is about 6328.1712998306. The cubic root of 40045752 is about 342.1255310189.

Adding to 40045752 its reverse (25754004), we get a palindrome (65799756).

The spelling of 40045752 in words is "forty million, forty-five thousand, seven hundred fifty-two".