30839930 has 32 divisors (see below), whose sum is σ = 61024320. Its totient is φ = 11128320.

The previous prime is 30839929. The next prime is 30839957. The reversal of 30839930 is 3993803.

It is a super-2 number, since 2×30839930² = 1902202564809800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14282 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (1907010).

Almost surely, 2^30839930 is an apocalyptic number.

30839930 is a deficient number, since it is larger than the sum of its proper divisors (30184390).

30839930 is a wasteful number, since it uses less digits than its factorization.

30839930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 30839930 is about 5553.3710482913. The cubic root of 30839930 is about 313.5964429023.

The spelling of 30839930 in words is "thirty million, eight hundred thirty-nine thousand, nine hundred thirty".