30126290 has 8 divisors (see below), whose sum is σ = 54227340. Its totient is φ = 12050512.

The previous prime is 30126289. The next prime is 30126293. The reversal of 30126290 is 9262103.

It can be written as a sum of positive squares in 2 ways, for example, as 30063289 + 63001 = 5483^2 + 251^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30126293) 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, 1506305 + ... + 1506324.

Almost surely, 2^30126290 is an apocalyptic number.

30126290 is a deficient number, since it is larger than the sum of its proper divisors (24101050).

30126290 is a wasteful number, since it uses less digits than its factorization.

30126290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012636.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30126290 is about 5488.7421145468. The cubic root of 30126290 is about 311.1586539682.

Adding to 30126290 its reverse (9262103), we get a palindrome (39388393).

The spelling of 30126290 in words is "thirty million, one hundred twenty-six thousand, two hundred ninety".