30143290 has 16 divisors (see below), whose sum is σ = 54332712. Its totient is φ = 12040704.

The previous prime is 30143287. The next prime is 30143293. The reversal of 30143290 is 9234103.

It is an interprime number because it is at equal distance from previous prime (30143287) and next prime (30143293).

It can be written as a sum of positive squares in 4 ways, for example, as 23030401 + 7112889 = 4799^2 + 2667^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30143293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7762 + ... + 10978.

Almost surely, 2^30143290 is an apocalyptic number.

30143290 is a deficient number, since it is larger than the sum of its proper divisors (24189422).

30143290 is a wasteful number, since it uses less digits than its factorization.

30143290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30143290 is about 5490.2905205462. The cubic root of 30143290 is about 311.2171709917.

Adding to 30143290 its reverse (9234103), we get a palindrome (39377393).

The spelling of 30143290 in words is "thirty million, one hundred forty-three thousand, two hundred ninety".