40168723 has 8 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 34387080.

The previous prime is 40168721. The next prime is 40168757. The reversal of 40168723 is 32786104.

40168723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40168723 - 2¹ = 40168721 is a prime.

It is a super-2 number, since 2×40168723² = 3227052614901458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40168721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3228 + ... + 9526.

It is an arithmetic number, because the mean of its divisors is an integer number (5745600).

Almost surely, 2^40168723 is an apocalyptic number.

40168723 is a deficient number, since it is larger than the sum of its proper divisors (5796077).

40168723 is an equidigital number, since it uses as much as digits as its factorization.

40168723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 40168723 is about 6337.8800083309. The cubic root of 40168723 is about 342.4753686089.

The spelling of 40168723 in words is "forty million, one hundred sixty-eight thousand, seven hundred twenty-three".