40724272 has 20 divisors (see below), whose sum is σ = 81036976. Its totient is φ = 19811520.

The previous prime is 40724269. The next prime is 40724273. The reversal of 40724272 is 27242704.

40724272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40724272.

It is not an unprimeable number, because it can be changed into a prime (40724273) 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, 33804 + ... + 34987.

Almost surely, 2^40724272 is an apocalyptic number.

It is an amenable number.

40724272 is a deficient number, since it is larger than the sum of its proper divisors (40312704).

40724272 is a wasteful number, since it uses less digits than its factorization.

40724272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68836 (or 68830 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 40724272 is about 6381.5571767399. The cubic root of 40724272 is about 344.0470009693.

Adding to 40724272 its reverse (27242704), we get a palindrome (67966976).

The spelling of 40724272 in words is "forty million, seven hundred twenty-four thousand, two hundred seventy-two".