30220020 has 96 divisors (see below), whose sum is σ = 94832640. Its totient is φ = 7989120.

The previous prime is 30220007. The next prime is 30220049. The reversal of 30220020 is 2002203.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30219984 and 30220011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102994 + ... + 103286.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^30220020 is an apocalyptic number.

30220020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47416320).

30220020 is an abundant number, since it is smaller than the sum of its proper divisors (64612620).

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

30220020 is a wasteful number, since it uses less digits than its factorization.

30220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 30220020 is about 5497.2738698377. The cubic root of 30220020 is about 311.4810158932.

Adding to 30220020 its reverse (2002203), we get a palindrome (32222223).

The spelling of 30220020 in words is "thirty million, two hundred twenty thousand, twenty".