40808336 has 40 divisors (see below), whose sum is σ = 84038520. Its totient is φ = 19160064.

The previous prime is 40808321. The next prime is 40808351. The reversal of 40808336 is 63380804.

It is an interprime number because it is at equal distance from previous prime (40808321) and next prime (40808351).

It can be written as a sum of positive squares in 4 ways, for example, as 12250000 + 28558336 = 3500^2 + 5344^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15980 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (2100963).

Almost surely, 2^40808336 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 40808336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42019260).

40808336 is an abundant number, since it is smaller than the sum of its proper divisors (43230184).

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

40808336 is a wasteful number, since it uses less digits than its factorization.

40808336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451 (or 2445 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 40808336 is about 6388.1402614533. The cubic root of 40808336 is about 344.2835682382.

The spelling of 40808336 in words is "forty million, eight hundred eight thousand, three hundred thirty-six".