40500918 has 32 divisors (see below), whose sum is σ = 90616320. Its totient is φ = 13408200.

The previous prime is 40500917. The next prime is 40500931. The reversal of 40500918 is 81900504.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40500891 and 40500900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40500917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5671 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (2831760).

Almost surely, 2^40500918 is an apocalyptic number.

40500918 is an abundant number, since it is smaller than the sum of its proper divisors (50115402).

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

40500918 is a wasteful number, since it uses less digits than its factorization.

40500918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 40500918 is about 6364.0331551619. The cubic root of 40500918 is about 343.4168674320.

The spelling of 40500918 in words is "forty million, five hundred thousand, nine hundred eighteen".