40347808 has 48 divisors (see below), whose sum is σ = 82131840. Its totient is φ = 19501056.

The previous prime is 40347763. The next prime is 40347841. The reversal of 40347808 is 80874304.

It is a super-2 number, since 2×40347808² = 3255891220809728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208960 + ... + 209152.

It is an arithmetic number, because the mean of its divisors is an integer number (1711080).

Almost surely, 2^40347808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40347808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41065920).

40347808 is an abundant number, since it is smaller than the sum of its proper divisors (41784032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40347808 is a wasteful number, since it uses less digits than its factorization.

40347808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 40347808 is about 6351.9924433204. The cubic root of 40347808 is about 342.9835689840.

The spelling of 40347808 in words is "forty million, three hundred forty-seven thousand, eight hundred eight".