30434838 has 16 divisors (see below), whose sum is σ = 69565440. Its totient is φ = 8695656.

The previous prime is 30434797. The next prime is 30434843. The reversal of 30434838 is 83843403.

It is a junction number, because it is equal to n+sod(n) for n = 30434799 and 30434808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362278 + ... + 362361.

It is an arithmetic number, because the mean of its divisors is an integer number (4347840).

Almost surely, 2^30434838 is an apocalyptic number.

30434838 is an abundant number, since it is smaller than the sum of its proper divisors (39130602).

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

30434838 is a wasteful number, since it uses less digits than its factorization.

30434838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724651.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 30434838 is about 5516.7778639347. Note that the first 3 decimals coincide. The cubic root of 30434838 is about 312.2173247535.

The spelling of 30434838 in words is "thirty million, four hundred thirty-four thousand, eight hundred thirty-eight".