30540206 has 4 divisors (see below), whose sum is σ = 45810312. Its totient is φ = 15270102.

The previous prime is 30540193. The next prime is 30540217. The reversal of 30540206 is 60204503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60204503 = 353 ⋅170551.

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 as a sum of consecutive naturals, namely, 7635050 + ... + 7635053.

It is an arithmetic number, because the mean of its divisors is an integer number (11452578).

Almost surely, 2^30540206 is an apocalyptic number.

30540206 is a deficient number, since it is larger than the sum of its proper divisors (15270106).

30540206 is a wasteful number, since it uses less digits than its factorization.

30540206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15270105.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30540206 is about 5526.3193899738. The cubic root of 30540206 is about 312.5772173983.

Adding to 30540206 its reverse (60204503), we get a palindrome (90744709).

The spelling of 30540206 in words is "thirty million, five hundred forty thousand, two hundred six".