30689041 has 4 divisors (see below), whose sum is σ = 30736692. Its totient is φ = 30641392.

The previous prime is 30689023. The next prime is 30689053. The reversal of 30689041 is 14098603.

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 10627600 + 20061441 = 3260^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 30689041 - 2⁷ = 30688913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30688994 and 30689012.

It is not an unprimeable number, because it can be changed into a prime (30689081) 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 3 ways as a sum of consecutive naturals, for example, 22846 + ... + 24151.

It is an arithmetic number, because the mean of its divisors is an integer number (7684173).

Almost surely, 2^30689041 is an apocalyptic number.

It is an amenable number.

30689041 is a deficient number, since it is larger than the sum of its proper divisors (47651).

30689041 is an equidigital number, since it uses as much as digits as its factorization.

30689041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47650.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30689041 is about 5539.7690385069. The cubic root of 30689041 is about 313.0841672618.

The spelling of 30689041 in words is "thirty million, six hundred eighty-nine thousand, forty-one".