30243256 has 8 divisors (see below), whose sum is σ = 56706120. Its totient is φ = 15121624.

The previous prime is 30243247. The next prime is 30243271. The reversal of 30243256 is 65234203.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30243256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890196 + ... + 1890211.

It is an arithmetic number, because the mean of its divisors is an integer number (7088265).

Almost surely, 2^30243256 is an apocalyptic number.

It is an amenable number.

30243256 is a deficient number, since it is larger than the sum of its proper divisors (26462864).

30243256 is a wasteful number, since it uses less digits than its factorization.

30243256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780413 (or 3780409 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 30243256 is about 5499.3868749161. The cubic root of 30243256 is about 311.5608274299.

Adding to 30243256 its reverse (65234203), we get a palindrome (95477459).

The spelling of 30243256 in words is "thirty million, two hundred forty-three thousand, two hundred fifty-six".