2690779872 has 96 divisors (see below), whose sum is σ = 7715675520. Its totient is φ = 814302720.

The previous prime is 2690779841. The next prime is 2690779909. The reversal of 2690779872 is 2789770962.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1184754 + ... + 1187022.

It is an arithmetic number, because the mean of its divisors is an integer number (80371620).

Almost surely, 2^2690779872 is an apocalyptic number.

2690779872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2690779872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3857837760).

2690779872 is an abundant number, since it is smaller than the sum of its proper divisors (5024895648).

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

2690779872 is a wasteful number, since it uses less digits than its factorization.

2690779872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416 (or 3408 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 57.

The square root of 2690779872 is about 51872.7276321575. The cubic root of 2690779872 is about 1390.8898037877.

The spelling of 2690779872 in words is "two billion, six hundred ninety million, seven hundred seventy-nine thousand, eight hundred seventy-two".