40720444 has 12 divisors (see below), whose sum is σ = 71311968. Its totient is φ = 20345600.

The previous prime is 40720429. The next prime is 40720447. The reversal of 40720444 is 44402704.

40720444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40720447) 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, 4764 + ... + 10204.

It is an arithmetic number, because the mean of its divisors is an integer number (5942664).

Almost surely, 2^40720444 is an apocalyptic number.

It is an amenable number.

40720444 is a deficient number, since it is larger than the sum of its proper divisors (30591524).

40720444 is a wasteful number, since it uses less digits than its factorization.

40720444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316 (or 7314 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 40720444 is about 6381.2572428950. The cubic root of 40720444 is about 344.0362207219.

The spelling of 40720444 in words is "forty million, seven hundred twenty thousand, four hundred forty-four".