30542747 has 4 divisors (see below), whose sum is σ = 32150280. Its totient is φ = 28935216.

The previous prime is 30542741. The next prime is 30542773. The reversal of 30542747 is 74724503.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30542747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30542741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803738 + ... + 803775.

It is an arithmetic number, because the mean of its divisors is an integer number (8037570).

Almost surely, 2^30542747 is an apocalyptic number.

30542747 is a deficient number, since it is larger than the sum of its proper divisors (1607533).

30542747 is a wasteful number, since it uses less digits than its factorization.

30542747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607532.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 30542747 is about 5526.5492850422. The cubic root of 30542747 is about 312.5858861533.

The spelling of 30542747 in words is "thirty million, five hundred forty-two thousand, seven hundred forty-seven".