30490657 has 2 divisors, whose sum is σ = 30490658. Its totient is φ = 30490656.

The previous prime is 30490651. The next prime is 30490661. The reversal of 30490657 is 75609403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30481441 + 9216 = 5521^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 30490657 - 2¹⁹ = 29966369 is a prime.

It is not a weakly prime, because it can be changed into another prime (30490651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15245328 + 15245329.

It is an arithmetic number, because the mean of its divisors is an integer number (15245329).

Almost surely, 2^30490657 is an apocalyptic number.

It is an amenable number.

30490657 is a deficient number, since it is larger than the sum of its proper divisors (1).

30490657 is an equidigital number, since it uses as much as digits as its factorization.

30490657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 30490657 is about 5521.8345683296. The cubic root of 30490657 is about 312.4080821929.

The spelling of 30490657 in words is "thirty million, four hundred ninety thousand, six hundred fifty-seven".