30198842 has 8 divisors (see below), whose sum is σ = 45400500. Its totient is φ = 15065344.

The previous prime is 30198841. The next prime is 30198871. The reversal of 30198842 is 24889103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29800681 + 398161 = 5459^2 + 631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30198841) 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, 15917 + ... + 17712.

Almost surely, 2^30198842 is an apocalyptic number.

30198842 is a deficient number, since it is larger than the sum of its proper divisors (15201658).

30198842 is a wasteful number, since it uses less digits than its factorization.

30198842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34080.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 30198842 is about 5495.3473047661. The cubic root of 30198842 is about 311.4082375772.

The spelling of 30198842 in words is "thirty million, one hundred ninety-eight thousand, eight hundred forty-two".