30661206 has 16 divisors (see below), whose sum is σ = 61382064. Its totient is φ = 10210464.

The previous prime is 30661187. The next prime is 30661237. The reversal of 30661206 is 60216603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6960 + ... + 10476.

It is an arithmetic number, because the mean of its divisors is an integer number (3836379).

Almost surely, 2^30661206 is an apocalyptic number.

30661206 is an abundant number, since it is smaller than the sum of its proper divisors (30720858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30661206 is a wasteful number, since it uses less digits than its factorization.

30661206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30661206 is about 5537.2561797338. The cubic root of 30661206 is about 312.9894827144.

Adding to 30661206 its reverse (60216603), we get a palindrome (90877809).

The spelling of 30661206 in words is "thirty million, six hundred sixty-one thousand, two hundred six".