40172432 has 10 divisors (see below), whose sum is σ = 77834118. Its totient is φ = 20086208.

The previous prime is 40172423. The next prime is 40172443. The reversal of 40172432 is 23427104.

40172432 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 only one way, i.e., 36772096 + 3400336 = 6064^2 + 1844^2 .

It is a super-2 number, since 2×40172432² = 3227648585589248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40172398 and 40172407.

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 as a sum of consecutive naturals, namely, 1255373 + ... + 1255404.

Almost surely, 2^40172432 is an apocalyptic number.

It is an amenable number.

40172432 is a deficient number, since it is larger than the sum of its proper divisors (37661686).

40172432 is a wasteful number, since it uses less digits than its factorization.

40172432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510785 (or 2510779 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40172432 is about 6338.1726073057. The cubic root of 40172432 is about 342.4859091651.

Adding to 40172432 its reverse (23427104), we get a palindrome (63599536).

It can be divided in two parts, 40172 and 432, that added together give a palindrome (40604).

The spelling of 40172432 in words is "forty million, one hundred seventy-two thousand, four hundred thirty-two".