2002102020 has 72 divisors (see below), whose sum is σ = 6158617920. Its totient is φ = 526370880.

The previous prime is 2002102009. The next prime is 2002102043. The reversal of 2002102020 is 202012002.

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 = 2002101993 and 2002102011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65550 + ... + 91109.

It is an arithmetic number, because the mean of its divisors is an integer number (85536360).

Almost surely, 2^2002102020 is an apocalyptic number.

2002102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002102020 is an abundant number, since it is smaller than the sum of its proper divisors (4156515900).

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

2002102020 is a wasteful number, since it uses less digits than its factorization.

2002102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156745 (or 156740 counting only the distinct ones).

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

The square root of 2002102020 is about 44744.8546762642. The cubic root of 2002102020 is about 1260.3622918886.

Adding to 2002102020 its reverse (202012002), we get a palindrome (2204114022).

The spelling of 2002102020 in words is "two billion, two million, one hundred two thousand, twenty".