40344072 has 16 divisors (see below), whose sum is σ = 100860240. Its totient is φ = 13448016.

The previous prime is 40344037. The next prime is 40344091. The reversal of 40344072 is 27044304.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1681003 = 40344072 / (4 + 0 + 3 + 4 + 4 + 0 + 7 + 2).

It is an unprimeable number.

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, 840478 + ... + 840525.

It is an arithmetic number, because the mean of its divisors is an integer number (6303765).

Almost surely, 2^40344072 is an apocalyptic number.

It is an amenable number.

40344072 is an abundant number, since it is smaller than the sum of its proper divisors (60516168).

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

40344072 is a wasteful number, since it uses less digits than its factorization.

40344072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681012 (or 1681008 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 40344072 is about 6351.6983555581. The cubic root of 40344072 is about 342.9729824844.

Adding to 40344072 its reverse (27044304), we get a palindrome (67388376).

The spelling of 40344072 in words is "forty million, three hundred forty-four thousand, seventy-two".