30329838 has 96 divisors (see below), whose sum is σ = 83266560. Its totient is φ = 7750080.

The previous prime is 30329809. The next prime is 30329839. The reversal of 30329838 is 83892303.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30329839) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 109356 + ... + 109632.

It is an arithmetic number, because the mean of its divisors is an integer number (867360).

Almost surely, 2^30329838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30329838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41633280).

30329838 is an abundant number, since it is smaller than the sum of its proper divisors (52936722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30329838 is a wasteful number, since it uses less digits than its factorization.

30329838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 30329838 is about 5507.2532173489. The cubic root of 30329838 is about 311.8578617844.

The spelling of 30329838 in words is "thirty million, three hundred twenty-nine thousand, eight hundred thirty-eight".