40808100 has 36 divisors (see below), whose sum is σ = 118072304. Its totient is φ = 10882080.

The previous prime is 40808099. The next prime is 40808101. The reversal of 40808100 is 180804.

It is an interprime number because it is at equal distance from previous prime (40808099) and next prime (40808101).

It is a super-2 number, since 2×40808100² = 3330602051220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40808101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67714 + ... + 68313.

Almost surely, 2^40808100 is an apocalyptic number.

It is an amenable number.

40808100 is an abundant number, since it is smaller than the sum of its proper divisors (77264204).

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

40808100 is a wasteful number, since it uses less digits than its factorization.

40808100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136044 (or 136037 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 40808100 is about 6388.1217896969. The cubic root of 40808100 is about 344.2829045578.

Adding to 40808100 its reverse (180804), we get a palindrome (40988904).

The spelling of 40808100 in words is "forty million, eight hundred eight thousand, one hundred".