30497290 has 8 divisors (see below), whose sum is σ = 54895140. Its totient is φ = 12198912.

The previous prime is 30497267. The next prime is 30497297. The reversal of 30497290 is 9279403.

It can be written as a sum of positive squares in 2 ways, for example, as 28804689 + 1692601 = 5367^2 + 1301^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30497297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524855 + ... + 1524874.

Almost surely, 2^30497290 is an apocalyptic number.

30497290 is a deficient number, since it is larger than the sum of its proper divisors (24397850).

30497290 is a wasteful number, since it uses less digits than its factorization.

30497290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049736.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 30497290 is about 5522.4351512716. The cubic root of 30497290 is about 312.4307345151.

The spelling of 30497290 in words is "thirty million, four hundred ninety-seven thousand, two hundred ninety".