30730869 has 12 divisors (see below), whose sum is σ = 47803756. Its totient is φ = 18911232.

The previous prime is 30730867. The next prime is 30730873. The reversal of 30730869 is 96803703.

It can be written as a sum of positive squares in 2 ways, for example, as 13616100 + 17114769 = 3690^2 + 4137^2 .

It is not a de Polignac number, because 30730869 - 2¹ = 30730867 is a prime.

It is a super-2 number, since 2×30730869² = 1888772618990322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30730867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131212 + ... + 131445.

Almost surely, 2^30730869 is an apocalyptic number.

30730869 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30730869 is a deficient number, since it is larger than the sum of its proper divisors (17072887).

30730869 is a wasteful number, since it uses less digits than its factorization.

30730869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262676 (or 262673 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30730869 is about 5543.5430006450. The cubic root of 30730869 is about 313.2263433066.

The spelling of 30730869 in words is "thirty million, seven hundred thirty thousand, eight hundred sixty-nine".