40478506 has 4 divisors (see below), whose sum is σ = 60717762. Its totient is φ = 20239252.

The previous prime is 40478497. The next prime is 40478527. The reversal of 40478506 is 60587404.

40478506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33744481 + 6734025 = 5809^2 + 2595^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10119625 + ... + 10119628.

Almost surely, 2^40478506 is an apocalyptic number.

40478506 is a deficient number, since it is larger than the sum of its proper divisors (20239256).

40478506 is a wasteful number, since it uses less digits than its factorization.

40478506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20239255.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 40478506 is about 6362.2720784324. The cubic root of 40478506 is about 343.3535101935.

The spelling of 40478506 in words is "forty million, four hundred seventy-eight thousand, five hundred six".