2078812836 has 135 divisors (see below), whose sum is σ = 5811908179. Its totient is φ = 647799552.

The previous prime is 2078812831. The next prime is 2078812859. The reversal of 2078812836 is 6382188702.

The square root of 2078812836 is 45594.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 40832100 + 2037980736 = 6390^2 + 45144^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2078812791 and 2078812800.

It is not an unprimeable number, because it can be changed into a prime (2078812831) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 13951690 + ... + 13951838.

Almost surely, 2^2078812836 is an apocalyptic number.

2078812836 is the 45594-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2078812836

2078812836 is an abundant number, since it is smaller than the sum of its proper divisors (3733095343).

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

2078812836 is a wasteful number, since it uses less digits than its factorization.

2078812836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 171 counting only the distinct ones).

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

The cubic root of 2078812836 is about 1276.2579584471.

The spelling of 2078812836 in words is "two billion, seventy-eight million, eight hundred twelve thousand, eight hundred thirty-six".