30020689 has 8 divisors (see below), whose sum is σ = 30431232. Its totient is φ = 29612640.

The previous prime is 30020677. The next prime is 30020693. The reversal of 30020689 is 98602003.

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 30020689 - 2⁷ = 30020561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30020659) 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, 39069 + ... + 39829.

It is an arithmetic number, because the mean of its divisors is an integer number (3803904).

Almost surely, 2^30020689 is an apocalyptic number.

It is an amenable number.

30020689 is a deficient number, since it is larger than the sum of its proper divisors (410543).

30020689 is a wasteful number, since it uses less digits than its factorization.

30020689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30020689 is about 5479.1138882122. The cubic root of 30020689 is about 310.7946625522.

The spelling of 30020689 in words is "thirty million, twenty thousand, six hundred eighty-nine".