2805036980 has 12 divisors (see below), whose sum is σ = 5890577700. Its totient is φ = 1122014784.

The previous prime is 2805036947. The next prime is 2805036989. The reversal of 2805036980 is 896305082.

It can be written as a sum of positive squares in 2 ways, for example, as 1922471716 + 882565264 = 43846^2 + 29708^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805036989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70125905 + ... + 70125944.

It is an arithmetic number, because the mean of its divisors is an integer number (490881475).

Almost surely, 2^2805036980 is an apocalyptic number.

2805036980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2805036980 is an abundant number, since it is smaller than the sum of its proper divisors (3085540720).

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

2805036980 is a wasteful number, since it uses less digits than its factorization.

2805036980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140251858 (or 140251856 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 2805036980 is about 52962.5998228939. The cubic root of 2805036980 is about 1410.3044092348.

The spelling of 2805036980 in words is "two billion, eight hundred five million, thirty-six thousand, nine hundred eighty".