30240869 has 4 divisors (see below), whose sum is σ = 30433644. Its totient is φ = 30048096.

The previous prime is 30240857. The next prime is 30240887. The reversal of 30240869 is 96804203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96804203 = 1201 ⋅80603.

It can be written as a sum of positive squares in 2 ways, for example, as 15108769 + 15132100 = 3887^2 + 3890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30240869 is a prime.

It is a super-2 number, since 2×30240869² = 1829020315750322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30240809) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 96152 + ... + 96465.

It is an arithmetic number, because the mean of its divisors is an integer number (7608411).

Almost surely, 2^30240869 is an apocalyptic number.

It is an amenable number.

30240869 is a deficient number, since it is larger than the sum of its proper divisors (192775).

30240869 is a wasteful number, since it uses less digits than its factorization.

30240869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192774.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30240869 is about 5499.1698464405. The cubic root of 30240869 is about 311.5526303929.

The spelling of 30240869 in words is "thirty million, two hundred forty thousand, eight hundred sixty-nine".