40320487 has 8 divisors (see below), whose sum is σ = 40924800. Its totient is φ = 39719160.

The previous prime is 40320463. The next prime is 40320493. The reversal of 40320487 is 78402304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40320487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49312 + ... + 50122.

It is an arithmetic number, because the mean of its divisors is an integer number (5115600).

Almost surely, 2^40320487 is an apocalyptic number.

40320487 is a deficient number, since it is larger than the sum of its proper divisors (604313).

40320487 is an equidigital number, since it uses as much as digits as its factorization.

40320487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40320487 is about 6349.8414940847. The cubic root of 40320487 is about 342.9061358642.

The spelling of 40320487 in words is "forty million, three hundred twenty thousand, four hundred eighty-seven".