30138194 has 8 divisors (see below), whose sum is σ = 45232560. Its totient is φ = 15060676.

The previous prime is 30138193. The next prime is 30138197. The reversal of 30138194 is 49183103.

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 (30138193) 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, 2237 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (5654070).

Almost surely, 2^30138194 is an apocalyptic number.

30138194 is a deficient number, since it is larger than the sum of its proper divisors (15094366).

30138194 is a wasteful number, since it uses less digits than its factorization.

30138194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30138194 is about 5489.8264089131. The cubic root of 30138194 is about 311.1996319630.

The spelling of 30138194 in words is "thirty million, one hundred thirty-eight thousand, one hundred ninety-four".