30556242 has 48 divisors (see below), whose sum is σ = 71292312. Its totient is φ = 9423360.

The previous prime is 30556177. The next prime is 30556271. The reversal of 30556242 is 24265503.

30556242 is a `hidden beast` number, since 30 + 5 + 5 + 624 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13242321 + 17313921 = 3639^2 + 4161^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17848 + ... + 19484.

Almost surely, 2^30556242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30556242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35646156).

30556242 is an abundant number, since it is smaller than the sum of its proper divisors (40736070).

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

30556242 is a wasteful number, since it uses less digits than its factorization.

30556242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 30556242 is about 5527.7700748132. The cubic root of 30556242 is about 312.6319169988.

The spelling of 30556242 in words is "thirty million, five hundred fifty-six thousand, two hundred forty-two".