30608139 has 16 divisors (see below), whose sum is σ = 42812928. Its totient is φ = 19428192.

The previous prime is 30608117. The next prime is 30608141. The reversal of 30608139 is 93180603.

It is not a de Polignac number, because 30608139 - 2⁸ = 30607883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30608839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2284 + ... + 8150.

It is an arithmetic number, because the mean of its divisors is an integer number (2675808).

Almost surely, 2^30608139 is an apocalyptic number.

30608139 is a deficient number, since it is larger than the sum of its proper divisors (12204789).

30608139 is a wasteful number, since it uses less digits than its factorization.

30608139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5954.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30608139 is about 5532.4622908792. The cubic root of 30608139 is about 312.8088091908.

The spelling of 30608139 in words is "thirty million, six hundred eight thousand, one hundred thirty-nine".