800012020 has 24 divisors (see below), whose sum is σ = 1688738184. Its totient is φ = 318345216.

The previous prime is 800011991. The next prime is 800012029. The reversal of 800012020 is 20210008.

It can be written as a sum of positive squares in 4 ways, for example, as 64192144 + 735819876 = 8012^2 + 27126^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800012029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99769 + ... + 107488.

It is an arithmetic number, because the mean of its divisors is an integer number (70364091).

Almost surely, 2^800012020 is an apocalyptic number.

It is an amenable number.

800012020 is an abundant number, since it is smaller than the sum of its proper divisors (888726164).

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

800012020 is a wasteful number, since it uses less digits than its factorization.

800012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207459 (or 207457 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 800012020 is about 28284.4837322515. The cubic root of 800012020 is about 928.3224160241.

Adding to 800012020 its reverse (20210008), we get a palindrome (820222028).

The spelling of 800012020 in words is "eight hundred million, twelve thousand, twenty".