40172752 has 20 divisors (see below), whose sum is σ = 77976036. Its totient is φ = 20049920.

The previous prime is 40172749. The next prime is 40172753. The reversal of 40172752 is 25727104.

40172752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34527376 + 5645376 = 5876^2 + 2376^2 .

It is a super-2 number, since 2×40172752² = 3227700006507008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40172752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40172753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8298 + ... + 12214.

Almost surely, 2^40172752 is an apocalyptic number.

It is an amenable number.

40172752 is a deficient number, since it is larger than the sum of its proper divisors (37803284).

40172752 is a wasteful number, since it uses less digits than its factorization.

40172752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566 (or 4560 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 40172752 is about 6338.1978511246. The cubic root of 40172752 is about 342.4868185383.

Adding to 40172752 its reverse (25727104), we get a palindrome (65899856).

It can be divided in two parts, 401 and 72752, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 40172752 in words is "forty million, one hundred seventy-two thousand, seven hundred fifty-two".