40080072 has 16 divisors (see below), whose sum is σ = 100200240. Its totient is φ = 13360016.

The previous prime is 40080071. The next prime is 40080077. The reversal of 40080072 is 27008004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40080071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834978 + ... + 835025.

It is an arithmetic number, because the mean of its divisors is an integer number (6262515).

Almost surely, 2^40080072 is an apocalyptic number.

It is an amenable number.

40080072 is an abundant number, since it is smaller than the sum of its proper divisors (60120168).

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

40080072 is a wasteful number, since it uses less digits than its factorization.

40080072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670012 (or 1670008 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 40080072 is about 6330.8824029514. The cubic root of 40080072 is about 342.2232392229.

Adding to 40080072 its reverse (27008004), we get a palindrome (67088076).

The spelling of 40080072 in words is "forty million, eighty thousand, seventy-two".