30618442 has 8 divisors (see below), whose sum is σ = 45956196. Its totient is φ = 15299712.

The previous prime is 30618433. The next prime is 30618449. The reversal of 30618442 is 24481603.

It can be written as a sum of positive squares in 2 ways, for example, as 30349081 + 269361 = 5509^2 + 519^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 30618442.

It is not an unprimeable number, because it can be changed into a prime (30618449) 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, 378 + ... + 7834.

Almost surely, 2^30618442 is an apocalyptic number.

30618442 is a deficient number, since it is larger than the sum of its proper divisors (15337754).

30618442 is a wasteful number, since it uses less digits than its factorization.

30618442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 30618442 is about 5533.3933530881. The cubic root of 30618442 is about 312.8439034252.

The spelling of 30618442 in words is "thirty million, six hundred eighteen thousand, four hundred forty-two".