30066556 has 12 divisors (see below), whose sum is σ = 56663992. Its totient is φ = 13876848.

The previous prime is 30066551. The next prime is 30066581. The reversal of 30066556 is 65566003.

It is a happy number.

It is a super-2 number, since 2×30066556² = 1807995579402272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30066551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289050 + ... + 289153.

Almost surely, 2^30066556 is an apocalyptic number.

It is an amenable number.

30066556 is a deficient number, since it is larger than the sum of its proper divisors (26597436).

30066556 is a wasteful number, since it uses less digits than its factorization.

30066556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578220 (or 578218 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 30066556 is about 5483.2979127529. The cubic root of 30066556 is about 310.9528641735.

The spelling of 30066556 in words is "thirty million, sixty-six thousand, five hundred fifty-six".