30642285 has 8 divisors (see below), whose sum is σ = 49027680. Its totient is φ = 16342544.

The previous prime is 30642281. The next prime is 30642301. The reversal of 30642285 is 58224603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30642285 - 2² = 30642281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30642281) 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 7 ways as a sum of consecutive naturals, for example, 1021395 + ... + 1021424.

It is an arithmetic number, because the mean of its divisors is an integer number (6128460).

Almost surely, 2^30642285 is an apocalyptic number.

It is an amenable number.

30642285 is a deficient number, since it is larger than the sum of its proper divisors (18385395).

30642285 is a wasteful number, since it uses less digits than its factorization.

30642285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042827.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 30642285 is about 5535.5473984061. The cubic root of 30642285 is about 312.9250876328.

Adding to 30642285 its reverse (58224603), we get a palindrome (88866888).

The spelling of 30642285 in words is "thirty million, six hundred forty-two thousand, two hundred eighty-five".