30208534 has 4 divisors (see below), whose sum is σ = 45312804. Its totient is φ = 15104266.

The previous prime is 30208523. The next prime is 30208543. The reversal of 30208534 is 43580203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43580203 = 31 ⋅1405813.

It is a junction number, because it is equal to n+sod(n) for n = 30208499 and 30208508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7552132 + ... + 7552135.

It is an arithmetic number, because the mean of its divisors is an integer number (11328201).

Almost surely, 2^30208534 is an apocalyptic number.

30208534 is a deficient number, since it is larger than the sum of its proper divisors (15104270).

30208534 is a wasteful number, since it uses less digits than its factorization.

30208534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15104269.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 30208534 is about 5496.2290709176. The cubic root of 30208534 is about 311.4415484110.

Adding to 30208534 its reverse (43580203), we get a palindrome (73788737).

The spelling of 30208534 in words is "thirty million, two hundred eight thousand, five hundred thirty-four".