30020220 has 168 divisors, whose sum is σ = 99156960. Its totient is φ = 7620480.

The previous prime is 30020213. The next prime is 30020227. The reversal of 30020220 is 2202003.

It is an interprime number because it is at equal distance from previous prime (30020213) and next prime (30020227).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020227) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 422785 + ... + 422855.

It is an arithmetic number, because the mean of its divisors is an integer number (590220).

Almost surely, 2^30020220 is an apocalyptic number.

30020220 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 30020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49578480).

30020220 is an abundant number, since it is smaller than the sum of its proper divisors (69136740).

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

30020220 is a wasteful number, since it uses less digits than its factorization.

30020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 110 counting only the distinct ones).

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

The square root of 30020220 is about 5479.0710891537. The cubic root of 30020220 is about 310.7930440744.

Adding to 30020220 its reverse (2202003), we get a palindrome (32222223).

The spelling of 30020220 in words is "thirty million, twenty thousand, two hundred twenty".