30023020 has 48 divisors (see below), whose sum is σ = 67223520. Its totient is φ = 11224064.

The previous prime is 30023017. The next prime is 30023039. The reversal of 30023020 is 2032003.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30022988 and 30023006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76986 + ... + 77374.

It is an arithmetic number, because the mean of its divisors is an integer number (1400490).

Almost surely, 2^30023020 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 30023020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33611760).

30023020 is an abundant number, since it is smaller than the sum of its proper divisors (37200500).

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

30023020 is a wasteful number, since it uses less digits than its factorization.

30023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 30023020 is about 5479.3266009611. The cubic root of 30023020 is about 310.8027063784.

Adding to 30023020 its reverse (2032003), we get a palindrome (32055023).

The spelling of 30023020 in words is "thirty million, twenty-three thousand, twenty".