2002026420 has 72 divisors (see below), whose sum is σ = 6430047624. Its totient is φ = 502468608.

The previous prime is 2002026419. The next prime is 2002026427. The reversal of 2002026420 is 246202002.

It is a happy number.

2002026420 is a `hidden beast` number, since 2 + 0 + 0 + 20 + 2 + 642 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 663783696 + 1338242724 = 25764^2 + 36582^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2002026393 and 2002026402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002026427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324069 + ... + 330188.

It is an arithmetic number, because the mean of its divisors is an integer number (89306217).

Almost surely, 2^2002026420 is an apocalyptic number.

2002026420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002026420 is an abundant number, since it is smaller than the sum of its proper divisors (4428021204).

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

2002026420 is a wasteful number, since it uses less digits than its factorization.

2002026420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654289 (or 654284 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2002026420 is about 44744.0098784184. The cubic root of 2002026420 is about 1260.3464277971.

Adding to 2002026420 its reverse (246202002), we get a palindrome (2248228422).

The spelling of 2002026420 in words is "two billion, two million, twenty-six thousand, four hundred twenty".