30021017 has 8 divisors (see below), whose sum is σ = 32721024. Its totient is φ = 27376848.

The previous prime is 30021011. The next prime is 30021037. The reversal of 30021017 is 71012003.

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

It is a cyclic number.

It is not a de Polignac number, because 30021017 - 2⁶ = 30020953 is a prime.

It is a super-2 number, since 2×30021017² = 1802522923428578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30020992 and 30021010.

It is not an unprimeable number, because it can be changed into a prime (30021011) 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, 12833 + ... + 14990.

It is an arithmetic number, because the mean of its divisors is an integer number (4090128).

Almost surely, 2^30021017 is an apocalyptic number.

It is an amenable number.

30021017 is a deficient number, since it is larger than the sum of its proper divisors (2700007).

30021017 is a wasteful number, since it uses less digits than its factorization.

30021017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27919.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 30021017 is about 5479.1438199777. The cubic root of 30021017 is about 310.7957944414.

The spelling of 30021017 in words is "thirty million, twenty-one thousand, seventeen".