2812378860 has 192 divisors, whose sum is σ = 9253440000. Its totient is φ = 707159808.

The previous prime is 2812378859. The next prime is 2812378873. The reversal of 2812378860 is 688732182.

2812378860 is a `hidden beast` number, since 281 + 237 + 88 + 60 = 666.

It is a super-3 number, since 3×2812378860³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2759431 + ... + 2760449.

It is an arithmetic number, because the mean of its divisors is an integer number (48195000).

Almost surely, 2^2812378860 is an apocalyptic number.

2812378860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2812378860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4626720000).

2812378860 is an abundant number, since it is smaller than the sum of its proper divisors (6441061140).

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

2812378860 is a wasteful number, since it uses less digits than its factorization.

2812378860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 2812378860 is about 53031.8664578195. The cubic root of 2812378860 is about 1411.5337768786.

The spelling of 2812378860 in words is "two billion, eight hundred twelve million, three hundred seventy-eight thousand, eight hundred sixty".