30147056 has 20 divisors (see below), whose sum is σ = 58497000. Its totient is φ = 15051072.

The previous prime is 30147049. The next prime is 30147077. The reversal of 30147056 is 65074103.

It is an alternating number because its digits alternate between odd and even.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16895 + ... + 18593.

It is an arithmetic number, because the mean of its divisors is an integer number (2924850).

Almost surely, 2^30147056 is an apocalyptic number.

It is an amenable number.

30147056 is a deficient number, since it is larger than the sum of its proper divisors (28349944).

30147056 is a wasteful number, since it uses less digits than its factorization.

30147056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30147056 is about 5490.6334789348. The cubic root of 30147056 is about 311.2301312564.

The spelling of 30147056 in words is "thirty million, one hundred forty-seven thousand, fifty-six".