40530730 has 16 divisors (see below), whose sum is σ = 73084680. Its totient is φ = 16183552.

The previous prime is 40530697. The next prime is 40530757. The reversal of 40530730 is 3703504.

40530730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 29844369 + 10686361 = 5463^2 + 3269^2 .

It is an unprimeable number.

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, 2886 + ... + 9454.

Almost surely, 2^40530730 is an apocalyptic number.

40530730 is a deficient number, since it is larger than the sum of its proper divisors (32553950).

40530730 is a wasteful number, since it uses less digits than its factorization.

40530730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193.

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

The square root of 40530730 is about 6366.3749496868. The cubic root of 40530730 is about 343.5011077669.

The spelling of 40530730 in words is "forty million, five hundred thirty thousand, seven hundred thirty".