2689819028 has 24 divisors (see below), whose sum is σ = 5138723688. Its totient is φ = 1224446976.

The previous prime is 2689819001. The next prime is 2689819031. The reversal of 2689819028 is 8209189862.

It can be written as a sum of positive squares in 4 ways, for example, as 2226064 + 2687592964 = 1492^2 + 51842^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350501 + ... + 358092.

It is an arithmetic number, because the mean of its divisors is an integer number (214113487).

Almost surely, 2^2689819028 is an apocalyptic number.

It is an amenable number.

2689819028 is a deficient number, since it is larger than the sum of its proper divisors (2448904660).

2689819028 is a wasteful number, since it uses less digits than its factorization.

2689819028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708683 (or 708681 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 2689819028 is about 51863.4652525263. The cubic root of 2689819028 is about 1390.7242275989.

The spelling of 2689819028 in words is "two billion, six hundred eighty-nine million, eight hundred nineteen thousand, twenty-eight".