20130032020 has 60 divisors (see below), whose sum is σ = 49315761684. Its totient is φ = 6901708800.

The previous prime is 20130031979. The next prime is 20130032023. The reversal of 20130032020 is 2023003102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5576504976 + 14553527044 = 74676^2 + 120638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130032023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 161581 + ... + 257620.

Almost surely, 2^20130032020 is an apocalyptic number.

20130032020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130032020 is an abundant number, since it is smaller than the sum of its proper divisors (29185729664).

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

20130032020 is an equidigital number, since it uses as much as digits as its factorization.

20130032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419238 (or 419215 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20130032020 its reverse (2023003102), we get a palindrome (22153035122).

The spelling of 20130032020 in words is "twenty billion, one hundred thirty million, thirty-two thousand, twenty".