30308838 has 48 divisors (see below), whose sum is σ = 73152000. Its totient is φ = 8199792.

The previous prime is 30308791. The next prime is 30308849. The reversal of 30308838 is 83880303.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30308799 and 30308808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14163 + ... + 16161.

It is an arithmetic number, because the mean of its divisors is an integer number (1524000).

Almost surely, 2^30308838 is an apocalyptic number.

30308838 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30308838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36576000).

30308838 is an abundant number, since it is smaller than the sum of its proper divisors (42843162).

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

30308838 is a wasteful number, since it uses less digits than its factorization.

30308838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 30308838 is about 5505.3463106330. The cubic root of 30308838 is about 311.7858696737.

The spelling of 30308838 in words is "thirty million, three hundred eight thousand, eight hundred thirty-eight".