40808220 has 96 divisors (see below), whose sum is σ = 120960000. Its totient is φ = 10262784.

The previous prime is 40808213. The next prime is 40808227. The reversal of 40808220 is 2280804.

It is an interprime number because it is at equal distance from previous prime (40808213) and next prime (40808227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81531 + ... + 82029.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000).

Almost surely, 2^40808220 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 40808220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60480000).

40808220 is an abundant number, since it is smaller than the sum of its proper divisors (80151780).

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

40808220 is a wasteful number, since it uses less digits than its factorization.

40808220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 40808220 is about 6388.1311821220. The cubic root of 40808220 is about 344.2832420227.

The spelling of 40808220 in words is "forty million, eight hundred eight thousand, two hundred twenty".