2769860856 has 128 divisors (see below), whose sum is σ = 8045199360. Its totient is φ = 778377600.

The previous prime is 2769860843. The next prime is 2769860861. The reversal of 2769860856 is 6580689672.

It is a junction number, because it is equal to n+sod(n) for n = 2769860796 and 2769860805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2794521 + ... + 2795511.

It is an arithmetic number, because the mean of its divisors is an integer number (62853120).

Almost surely, 2^2769860856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2769860856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4022599680).

2769860856 is an abundant number, since it is smaller than the sum of its proper divisors (5275338504).

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

2769860856 is a wasteful number, since it uses less digits than its factorization.

2769860856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The square root of 2769860856 is about 52629.4675633338. The cubic root of 2769860856 is about 1404.3843599912.

The spelling of 2769860856 in words is "two billion, seven hundred sixty-nine million, eight hundred sixty thousand, eight hundred fifty-six".