30102020 has 24 divisors (see below), whose sum is σ = 68077464. Its totient is φ = 11114496.

The previous prime is 30101999. The next prime is 30102031. The reversal of 30102020 is 2020103.

It can be written as a sum of positive squares in 4 ways, for example, as 334084 + 29767936 = 578^2 + 5456^2 .

It is a super-2 number, since 2×30102020² = 1812263216160800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30101989 and 30102007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57629 + ... + 58148.

It is an arithmetic number, because the mean of its divisors is an integer number (2836561).

Almost surely, 2^30102020 is an apocalyptic number.

It is an amenable number.

30102020 is an abundant number, since it is smaller than the sum of its proper divisors (37975444).

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

30102020 is a wasteful number, since it uses less digits than its factorization.

30102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115799 (or 115797 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 30102020 is about 5486.5307800103. The cubic root of 30102020 is about 311.0750741517.

Adding to 30102020 its reverse (2020103), we get a palindrome (32122123).

The spelling of 30102020 in words is "thirty million, one hundred two thousand, twenty".