30608138 has 16 divisors (see below), whose sum is σ = 50937120. Its totient is φ = 13676400.

The previous prime is 30608117. The next prime is 30608141. The reversal of 30608138 is 83180603.

It is a super-2 number, since 2×30608138² = 1873716223654088, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30608138.

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, 10493 + ... + 13088.

It is an arithmetic number, because the mean of its divisors is an integer number (3183570).

Almost surely, 2^30608138 is an apocalyptic number.

30608138 is a deficient number, since it is larger than the sum of its proper divisors (20328982).

30608138 is a wasteful number, since it uses less digits than its factorization.

30608138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23653.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 30608138 is about 5532.4622005035. The cubic root of 30608138 is about 312.8088057842.

The spelling of 30608138 in words is "thirty million, six hundred eight thousand, one hundred thirty-eight".