30212020 has 12 divisors (see below), whose sum is σ = 63445284. Its totient is φ = 12084800.

The previous prime is 30212003. The next prime is 30212051. The reversal of 30212020 is 2021203.

It can be written as a sum of positive squares in 2 ways, for example, as 20994724 + 9217296 = 4582^2 + 3036^2 .

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 = 30211988 and 30212006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755281 + ... + 755320.

It is an arithmetic number, because the mean of its divisors is an integer number (5287107).

Almost surely, 2^30212020 is an apocalyptic number.

It is an amenable number.

30212020 is an abundant number, since it is smaller than the sum of its proper divisors (33233264).

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

30212020 is a wasteful number, since it uses less digits than its factorization.

30212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510610 (or 1510608 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30212020 is about 5496.5461882895. The cubic root of 30212020 is about 311.4535278456.

Adding to 30212020 its reverse (2021203), we get a palindrome (32233223).

It can be divided in two parts, 3021 and 2020, that added together give a square (5041 = 71²).

The spelling of 30212020 in words is "thirty million, two hundred twelve thousand, twenty".