40320734 has 16 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 19760664.

The previous prime is 40320733. The next prime is 40320737. The reversal of 40320734 is 43702304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320733) 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, 31397 + ... + 32655.

It is an arithmetic number, because the mean of its divisors is an integer number (3855600).

Almost surely, 2^40320734 is an apocalyptic number.

40320734 is a deficient number, since it is larger than the sum of its proper divisors (21368866).

40320734 is a wasteful number, since it uses less digits than its factorization.

40320734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 40320734 is about 6349.8609433593. The cubic root of 40320734 is about 342.9068360677.

The spelling of 40320734 in words is "forty million, three hundred twenty thousand, seven hundred thirty-four".