30390646 has 16 divisors (see below), whose sum is σ = 53556048. Its totient is φ = 12751200.

The previous prime is 30390643. The next prime is 30390649. The reversal of 30390646 is 64609303.

It is an interprime number because it is at equal distance from previous prime (30390643) and next prime (30390649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30390641) 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, 52845 + ... + 53416.

It is an arithmetic number, because the mean of its divisors is an integer number (3347253).

Almost surely, 2^30390646 is an apocalyptic number.

30390646 is a deficient number, since it is larger than the sum of its proper divisors (23165402).

30390646 is a wasteful number, since it uses less digits than its factorization.

30390646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106287.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 30390646 is about 5512.7711724685. The cubic root of 30390646 is about 312.0661362647.

Adding to 30390646 its reverse (64609303), we get a palindrome (94999949).

The spelling of 30390646 in words is "thirty million, three hundred ninety thousand, six hundred forty-six".