40218273 has 24 divisors (see below), whose sum is σ = 60453120. Its totient is φ = 25734240.

The previous prime is 40218251. The next prime is 40218281. The reversal of 40218273 is 37281204.

40218273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40218273 - 2¹⁰ = 40217249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40218293) 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 23 ways as a sum of consecutive naturals, for example, 57858 + ... + 58548.

It is an arithmetic number, because the mean of its divisors is an integer number (2518880).

Almost surely, 2^40218273 is an apocalyptic number.

It is an amenable number.

40218273 is a deficient number, since it is larger than the sum of its proper divisors (20234847).

40218273 is a wasteful number, since it uses less digits than its factorization.

40218273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40218273 is about 6341.7878394030. The cubic root of 40218273 is about 342.6161305451.

Adding to 40218273 its reverse (37281204), we get a palindrome (77499477).

The spelling of 40218273 in words is "forty million, two hundred eighteen thousand, two hundred seventy-three".