30217009 has 9 divisors (see below), whose sum is σ = 31720633. Its totient is φ = 28782292.

The previous prime is 30216997. The next prime is 30217037. The reversal of 30217009 is 90071203.

The square root of 30217009 is 5497.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 30217009 - 2⁷ = 30216881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30217309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 126312 + ... + 126550.

Almost surely, 2^30217009 is an apocalyptic number.

30217009 is the 5497-th square number.

30217009 is the 2749-th centered octagonal number.

It is an amenable number.

30217009 is a deficient number, since it is larger than the sum of its proper divisors (1503624).

30217009 is an frugal number, since it uses more digits than its factorization.

30217009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The cubic root of 30217009 is about 311.4706706487.

The spelling of 30217009 in words is "thirty million, two hundred seventeen thousand, nine".