36005778 has 12 divisors (see below), whose sum is σ = 78012558. Its totient is φ = 12001920.

The previous prime is 36005777. The next prime is 36005797. The reversal of 36005778 is 87750063.

It can be written as a sum of positive squares in only one way, i.e., 35605089 + 400689 = 5967^2 + 633^2 .

It is not an unprimeable number, because it can be changed into a prime (36005771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1000143 + ... + 1000178.

Almost surely, 2^36005778 is an apocalyptic number.

36005778 is an abundant number, since it is smaller than the sum of its proper divisors (42006780).

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

36005778 is a wasteful number, since it uses less digits than its factorization.

36005778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000329 (or 2000326 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 36005778 is about 6000.4814806814. The cubic root of 36005778 is about 330.2103892552.

The spelling of 36005778 in words is "thirty-six million, five thousand, seven hundred seventy-eight".