30198238 has 8 divisors (see below), whose sum is σ = 51768432. Its totient is φ = 12942096.

The previous prime is 30198211. The next prime is 30198257. The reversal of 30198238 is 83289103.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078495 + ... + 1078522.

It is an arithmetic number, because the mean of its divisors is an integer number (6471054).

Almost surely, 2^30198238 is an apocalyptic number.

30198238 is a deficient number, since it is larger than the sum of its proper divisors (21570194).

30198238 is a wasteful number, since it uses less digits than its factorization.

30198238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157026.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 30198238 is about 5495.2923489110. The cubic root of 30198238 is about 311.4061614289.

The spelling of 30198238 in words is "thirty million, one hundred ninety-eight thousand, two hundred thirty-eight".