40730305 has 32 divisors (see below), whose sum is σ = 61885440. Its totient is φ = 24995520.

The previous prime is 40730293. The next prime is 40730321. The reversal of 40730305 is 50303704.

It is not a de Polignac number, because 40730305 - 2⁵ = 40730273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25006 + ... + 26584.

It is an arithmetic number, because the mean of its divisors is an integer number (1933920).

Almost surely, 2^40730305 is an apocalyptic number.

40730305 is the 3685-th octagonal number.

It is an amenable number.

40730305 is a deficient number, since it is larger than the sum of its proper divisors (21155135).

40730305 is a wasteful number, since it uses less digits than its factorization.

40730305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 40730305 is about 6382.0298495071. The cubic root of 40730305 is about 344.0639894708.

The spelling of 40730305 in words is "forty million, seven hundred thirty thousand, three hundred five".