40724972 has 12 divisors (see below), whose sum is σ = 73007256. Its totient is φ = 19865760.

The previous prime is 40724969. The next prime is 40724977. The reversal of 40724972 is 27942704.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40724977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123998 + ... + 124325.

It is an arithmetic number, because the mean of its divisors is an integer number (6083938).

Almost surely, 2^40724972 is an apocalyptic number.

It is an amenable number.

40724972 is a deficient number, since it is larger than the sum of its proper divisors (32282284).

40724972 is a wasteful number, since it uses less digits than its factorization.

40724972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248368 (or 248366 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 40724972 is about 6381.6120220521. The cubic root of 40724972 is about 344.0489722059.

The spelling of 40724972 in words is "forty million, seven hundred twenty-four thousand, nine hundred seventy-two".