30240208 has 20 divisors (see below), whose sum is σ = 59173668. Its totient is φ = 14969600.

The previous prime is 30240187. The next prime is 30240209. The reversal of 30240208 is 80204203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26956864 + 3283344 = 5192^2 + 1812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30240209) 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, 7741 + ... + 10972.

Almost surely, 2^30240208 is an apocalyptic number.

It is an amenable number.

30240208 is a deficient number, since it is larger than the sum of its proper divisors (28933460).

30240208 is a wasteful number, since it uses less digits than its factorization.

30240208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18822 (or 18816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 30240208 is about 5499.1097461316. The cubic root of 30240208 is about 311.5503604208.

The spelling of 30240208 in words is "thirty million, two hundred forty thousand, two hundred eight".