40263918 has 32 divisors (see below), whose sum is σ = 83969664. Its totient is φ = 12858912.

The previous prime is 40263911. The next prime is 40263929. The reversal of 40263918 is 81936204.

40263918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40263911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13521 + ... + 16227.

It is an arithmetic number, because the mean of its divisors is an integer number (2624052).

Almost surely, 2^40263918 is an apocalyptic number.

40263918 is an abundant number, since it is smaller than the sum of its proper divisors (43705746).

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

40263918 is a wasteful number, since it uses less digits than its factorization.

40263918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40263918 is about 6345.3855674813. The cubic root of 40263918 is about 342.7456968636.

The spelling of 40263918 in words is "forty million, two hundred sixty-three thousand, nine hundred eighteen".