30011020 has 48 divisors (see below), whose sum is σ = 68372640. Its totient is φ = 11064768.

The previous prime is 30010997. The next prime is 30011029. The reversal of 30011020 is 2011003.

It is a super-2 number, since 2×30011020² = 1801322642880800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30010994 and 30011012.

It is not an unprimeable number, because it can be changed into a prime (30011029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43599 + ... + 44281.

It is an arithmetic number, because the mean of its divisors is an integer number (1424430).

Almost surely, 2^30011020 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 30011020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34186320).

30011020 is an abundant number, since it is smaller than the sum of its proper divisors (38361620).

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

30011020 is a wasteful number, since it uses less digits than its factorization.

30011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 30011020 is about 5478.2314664497. The cubic root of 30011020 is about 310.7612922736.

Adding to 30011020 its reverse (2011003), we get a palindrome (32022023).

The spelling of 30011020 in words is "thirty million, eleven thousand, twenty".