2863212820 has 48 divisors (see below), whose sum is σ = 6553330560. Its totient is φ = 1044441216.

The previous prime is 2863212817. The next prime is 2863212827. The reversal of 2863212820 is 282123682.

It is a happy number.

It is a super-2 number, since 2×2863212820² = 16395975305224704800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863212827) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44760 + ... + 87919.

It is an arithmetic number, because the mean of its divisors is an integer number (136527720).

Almost surely, 2^2863212820 is an apocalyptic number.

2863212820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2863212820 is an abundant number, since it is smaller than the sum of its proper divisors (3690117740).

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

2863212820 is a wasteful number, since it uses less digits than its factorization.

2863212820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132784 (or 132782 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 2863212820 is about 53508.9975611579. The cubic root of 2863212820 is about 1419.9875718016.

The spelling of 2863212820 in words is "two billion, eight hundred sixty-three million, two hundred twelve thousand, eight hundred twenty".