40203618 has 96 divisors (see below), whose sum is σ = 102884544. Its totient is φ = 10378368.

The previous prime is 40203607. The next prime is 40203619. The reversal of 40203618 is 81630204.

It is a happy number.

40203618 is nontrivially palindromic in base 16.

40203618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

40203618 is a modest number, since divided by 3618 gives 402 as remainder.

It is not an unprimeable number, because it can be changed into a prime (40203619) 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 47 ways as a sum of consecutive naturals, for example, 255996 + ... + 256152.

It is an arithmetic number, because the mean of its divisors is an integer number (1071714).

Almost surely, 2^40203618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40203618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51442272).

40203618 is an abundant number, since it is smaller than the sum of its proper divisors (62680926).

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

40203618 is a wasteful number, since it uses less digits than its factorization.

40203618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 40203618 is about 6340.6323028543. The cubic root of 40203618 is about 342.5745105797.

The spelling of 40203618 in words is "forty million, two hundred three thousand, six hundred eighteen".