30386641 has 4 divisors (see below), whose sum is σ = 30457252. Its totient is φ = 30316032.

The previous prime is 30386621. The next prime is 30386677. The reversal of 30386641 is 14668303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 28313041 = 1440^2 + 5321^2 .

It is a cyclic number.

It is not a de Polignac number, because 30386641 - 2⁷ = 30386513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30386621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34656 + ... + 35521.

It is an arithmetic number, because the mean of its divisors is an integer number (7614313).

Almost surely, 2^30386641 is an apocalyptic number.

It is an amenable number.

30386641 is a deficient number, since it is larger than the sum of its proper divisors (70611).

30386641 is an equidigital number, since it uses as much as digits as its factorization.

30386641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70610.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30386641 is about 5512.4079130630. The cubic root of 30386641 is about 312.0524272243.

The spelling of 30386641 in words is "thirty million, three hundred eighty-six thousand, six hundred forty-one".