40808078 has 4 divisors (see below), whose sum is σ = 61212120. Its totient is φ = 20404038.

The previous prime is 40808069. The next prime is 40808093. The reversal of 40808078 is 87080804.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10202018 + ... + 10202021.

It is an arithmetic number, because the mean of its divisors is an integer number (15303030).

Almost surely, 2^40808078 is an apocalyptic number.

40808078 is a deficient number, since it is larger than the sum of its proper divisors (20404042).

40808078 is a wasteful number, since it uses less digits than its factorization.

40808078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20404041.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 40808078 is about 6388.1200677508. The cubic root of 40808078 is about 344.2828426891.

The spelling of 40808078 in words is "forty million, eight hundred eight thousand, seventy-eight".