40320412 has 48 divisors (see below), whose sum is σ = 79922304. Its totient is φ = 17640000.

The previous prime is 40320391. The next prime is 40320431. The reversal of 40320412 is 21402304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190987 + ... + 191197.

It is an arithmetic number, because the mean of its divisors is an integer number (1665048).

Almost surely, 2^40320412 is an apocalyptic number.

It is an amenable number.

40320412 is a deficient number, since it is larger than the sum of its proper divisors (39601892).

40320412 is a wasteful number, since it uses less digits than its factorization.

40320412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40320412 is about 6349.8355884227. The cubic root of 40320412 is about 342.9059232512.

Adding to 40320412 its reverse (21402304), we get a palindrome (61722716).

The spelling of 40320412 in words is "forty million, three hundred twenty thousand, four hundred twelve".