40724445 has 8 divisors (see below), whose sum is σ = 65159136. Its totient is φ = 21719696.

The previous prime is 40724443. The next prime is 40724479. The reversal of 40724445 is 54442704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40724445 - 2¹ = 40724443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40724443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357467 + ... + 1357496.

It is an arithmetic number, because the mean of its divisors is an integer number (8144892).

Almost surely, 2^40724445 is an apocalyptic number.

It is an amenable number.

40724445 is a deficient number, since it is larger than the sum of its proper divisors (24434691).

40724445 is a wasteful number, since it uses less digits than its factorization.

40724445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714971.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 40724445 is about 6381.5707314109. The cubic root of 40724445 is about 344.0474881484.

The spelling of 40724445 in words is "forty million, seven hundred twenty-four thousand, four hundred forty-five".