40808678 has 16 divisors (see below), whose sum is σ = 61910784. Its totient is φ = 20173440.

The previous prime is 40808671. The next prime is 40808689. The reversal of 40808678 is 87680804.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120926 + ... + 121262.

It is an arithmetic number, because the mean of its divisors is an integer number (3869424).

Almost surely, 2^40808678 is an apocalyptic number.

40808678 is a deficient number, since it is larger than the sum of its proper divisors (21102106).

40808678 is a wasteful number, since it uses less digits than its factorization.

40808678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 40808678 is about 6388.1670297512. The cubic root of 40808678 is about 344.2845300078.

The spelling of 40808678 in words is "forty million, eight hundred eight thousand, six hundred seventy-eight".