30142266 has 64 divisors (see below), whose sum is σ = 76640256. Its totient is φ = 7675200.

The previous prime is 30142247. The next prime is 30142267. The reversal of 30142266 is 66224103.

It is a super-2 number, since 2×30142266² = 1817112399229512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30142267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23871 + ... + 25101.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^30142266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30142266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38320128).

30142266 is an abundant number, since it is smaller than the sum of its proper divisors (46497990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30142266 is a wasteful number, since it uses less digits than its factorization.

30142266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30142266 is about 5490.1972642156. The cubic root of 30142266 is about 311.2136468244.

Adding to 30142266 its reverse (66224103), we get a palindrome (96366369).

The spelling of 30142266 in words is "thirty million, one hundred forty-two thousand, two hundred sixty-six".