40518272 has 32 divisors (see below), whose sum is σ = 84235680. Its totient is φ = 19376896.

The previous prime is 40518263. The next prime is 40518281. The reversal of 40518272 is 27281504.

It is an interprime number because it is at equal distance from previous prime (40518263) and next prime (40518281).

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938 + ... + 9825.

It is an arithmetic number, because the mean of its divisors is an integer number (2632365).

Almost surely, 2^40518272 is an apocalyptic number.

It is an amenable number.

40518272 is an abundant number, since it is smaller than the sum of its proper divisors (43717408).

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

40518272 is a wasteful number, since it uses less digits than its factorization.

40518272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800 (or 13788 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 40518272 is about 6365.3964526964. The cubic root of 40518272 is about 343.4659099855.

Adding to 40518272 its reverse (27281504), we get a palindrome (67799776).

The spelling of 40518272 in words is "forty million, five hundred eighteen thousand, two hundred seventy-two".