40805118 has 48 divisors (see below), whose sum is σ = 91203840. Its totient is φ = 13178448.

The previous prime is 40805101. The next prime is 40805123. The reversal of 40805118 is 81150804.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40805091 and 40805100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117421 + ... + 117767.

It is an arithmetic number, because the mean of its divisors is an integer number (1900080).

Almost surely, 2^40805118 is an apocalyptic number.

40805118 is an abundant number, since it is smaller than the sum of its proper divisors (50398722).

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

40805118 is a wasteful number, since it uses less digits than its factorization.

40805118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 40805118 is about 6387.8883834958. Note that the first 3 decimals coincide. The cubic root of 40805118 is about 344.2745183417.

The spelling of 40805118 in words is "forty million, eight hundred five thousand, one hundred eighteen".