30993398 has 8 divisors (see below), whose sum is σ = 47479392. Its totient is φ = 15166936.

The previous prime is 30993353. The next prime is 30993401. The reversal of 30993398 is 89339903.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164765 + ... + 164952.

It is an arithmetic number, because the mean of its divisors is an integer number (5934924).

Almost surely, 2^30993398 is an apocalyptic number.

30993398 is a deficient number, since it is larger than the sum of its proper divisors (16485994).

30993398 is a wasteful number, since it uses less digits than its factorization.

30993398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329766.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 30993398 is about 5567.1714541587. The cubic root of 30993398 is about 314.1157632311.

The spelling of 30993398 in words is "thirty million, nine hundred ninety-three thousand, three hundred ninety-eight".