40808000 has 56 divisors (see below), whose sum is σ = 101080824. Its totient is φ = 16320000.

The previous prime is 40807979. The next prime is 40808063. The reversal of 40808000 is 80804.

It can be written as a sum of positive squares in 4 ways, for example, as 12845056 + 27962944 = 3584^2 + 5288^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 5450 + ... + 10550.

Almost surely, 2^40808000 is an apocalyptic number.

40808000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40808000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50540412).

40808000 is an abundant number, since it is smaller than the sum of its proper divisors (60272824).

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

40808000 is an equidigital number, since it uses as much as digits as its factorization.

40808000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128 (or 5108 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 40808000 is about 6388.1139626653. The cubic root of 40808000 is about 344.2826233365.

Adding to 40808000 its reverse (80804), we get a palindrome (40888804).

The spelling of 40808000 in words is "forty million, eight hundred eight thousand".