30020688 has 60 divisors (see below), whose sum is σ = 84597760. Its totient is φ = 9937728.

The previous prime is 30020677. The next prime is 30020693. The reversal of 30020688 is 88602003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22833 + ... + 24111.

Almost surely, 2^30020688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42298880).

30020688 is an abundant number, since it is smaller than the sum of its proper divisors (54577072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30020688 is a wasteful number, since it uses less digits than its factorization.

30020688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30020688 is about 5479.1137969566. The cubic root of 30020688 is about 310.7946591013.

The spelling of 30020688 in words is "thirty million, twenty thousand, six hundred eighty-eight".