40508000 has 192 divisors, whose sum is σ = 115577280. Its totient is φ = 13824000.

The previous prime is 40507993. The next prime is 40508009. The reversal of 40508000 is 80504.

It is a self number, because there is not a number n which added to its sum of digits gives 40508000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40508009) 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, 987980 + ... + 988020.

It is an arithmetic number, because the mean of its divisors is an integer number (601965).

Almost surely, 2^40508000 is an apocalyptic number.

40508000 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 40508000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57788640).

40508000 is an abundant number, since it is smaller than the sum of its proper divisors (75069280).

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

40508000 is a wasteful number, since it uses less digits than its factorization.

40508000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40508000 is about 6364.5895390041. The cubic root of 40508000 is about 343.4368829167.

Adding to 40508000 its reverse (80504), we get a palindrome (40588504).

The spelling of 40508000 in words is "forty million, five hundred eight thousand".