202012020 has 144 divisors (see below), whose sum is σ = 741581568. Its totient is φ = 43453440.

The previous prime is 202012007. The next prime is 202012039. The reversal of 202012020 is 20210202.

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 = 202011993 and 202012011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16705 + ... + 26135.

It is an arithmetic number, because the mean of its divisors is an integer number (5149872).

Almost surely, 2^202012020 is an apocalyptic number.

202012020 is a gapful number since it is divisible by the number (20) 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 202012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370790784).

202012020 is an abundant number, since it is smaller than the sum of its proper divisors (539569548).

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

202012020 is a wasteful number, since it uses less digits than its factorization.

202012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9470 (or 9465 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 202012020 is about 14213.0932593859. The cubic root of 202012020 is about 586.7580687192.

Adding to 202012020 its reverse (20210202), we get a palindrome (222222222).

The spelling of 202012020 in words is "two hundred two million, twelve thousand, twenty".