30142886 has 8 divisors (see below), whose sum is σ = 46176480. Its totient is φ = 14750728.

The previous prime is 30142883. The next prime is 30142907. The reversal of 30142886 is 68824103.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142883) 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, 160241 + ... + 160428.

It is an arithmetic number, because the mean of its divisors is an integer number (5772060).

Almost surely, 2^30142886 is an apocalyptic number.

30142886 is a deficient number, since it is larger than the sum of its proper divisors (16033594).

30142886 is a wasteful number, since it uses less digits than its factorization.

30142886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320718.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 30142886 is about 5490.2537281987. The cubic root of 30142886 is about 311.2157806071.

Adding to 30142886 its reverse (68824103), we get a palindrome (98966989).

The spelling of 30142886 in words is "thirty million, one hundred forty-two thousand, eight hundred eighty-six".