40730723 has 16 divisors (see below), whose sum is σ = 46656000. Its totient is φ = 35196480.

The previous prime is 40730719. The next prime is 40730731. The reversal of 40730723 is 32703704.

It is not a de Polignac number, because 40730723 - 2² = 40730719 is a prime.

It is a super-2 number, since 2×40730723² = 3317983592205458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40730692 and 40730701.

It is not an unprimeable number, because it can be changed into a prime (40730713) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49943 + ... + 50751.

It is an arithmetic number, because the mean of its divisors is an integer number (2916000).

Almost surely, 2^40730723 is an apocalyptic number.

40730723 is a deficient number, since it is larger than the sum of its proper divisors (5925277).

40730723 is a wasteful number, since it uses less digits than its factorization.

40730723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 40730723 is about 6382.0625976247. The cubic root of 40730723 is about 344.0651664671.

The spelling of 40730723 in words is "forty million, seven hundred thirty thousand, seven hundred twenty-three".