20220030 has 96 divisors (see below), whose sum is σ = 55901664. Its totient is φ = 5256576.

The previous prime is 20220023. The next prime is 20220041. The reversal of 20220030 is 3002202.

20220030 = 278² + 279² + ... + 434².

It is a super-3 number, since 3×20220030³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 = 20219994 and 20220021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128712 + ... + 128868.

It is an arithmetic number, because the mean of its divisors is an integer number (582309).

Almost surely, 2^20220030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20220030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27950832).

20220030 is an abundant number, since it is smaller than the sum of its proper divisors (35681634).

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

20220030 is a wasteful number, since it uses less digits than its factorization.

20220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 220 counting only the distinct ones).

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

The square root of 20220030 is about 4496.6687669874. The cubic root of 20220030 is about 272.4335556093.

Adding to 20220030 its reverse (3002202), we get a palindrome (23222232).

The spelling of 20220030 in words is "twenty million, two hundred twenty thousand, thirty".