40720473 has 12 divisors (see below), whose sum is σ = 59402148. Its totient is φ = 26877600.

The previous prime is 40720447. The next prime is 40720507. The reversal of 40720473 is 37402704.

40720473 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 2 ways, for example, as 27846729 + 12873744 = 5277^2 + 3588^2 .

It is not a de Polignac number, because 40720473 - 2⁶ = 40720409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40720073) 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 11 ways as a sum of consecutive naturals, for example, 21490 + ... + 23307.

It is an arithmetic number, because the mean of its divisors is an integer number (4950179).

Almost surely, 2^40720473 is an apocalyptic number.

It is an amenable number.

40720473 is a deficient number, since it is larger than the sum of its proper divisors (18681675).

40720473 is a wasteful number, since it uses less digits than its factorization.

40720473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44904 (or 44901 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 40720473 is about 6381.2595151741. The cubic root of 40720473 is about 344.0363023930.

The spelling of 40720473 in words is "forty million, seven hundred twenty thousand, four hundred seventy-three".