2749402656 has 864 divisors, whose sum is σ = 11524141440. Its totient is φ = 620421120.

The previous prime is 2749402603. The next prime is 2749402751. The reversal of 2749402656 is 6562049472.

It is a tau number, because it is divible by the number of its divisors (864).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 161729560 + ... + 161729576.

Almost surely, 2^2749402656 is an apocalyptic number.

2749402656 is a gapful number since it is divisible by the number (26) 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 2749402656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5762070720).

2749402656 is an abundant number, since it is smaller than the sum of its proper divisors (8774738784).

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

2749402656 is a wasteful number, since it uses less digits than its factorization.

2749402656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 2749402656 is about 52434.7466476191. The cubic root of 2749402656 is about 1400.9182166860.

The spelling of 2749402656 in words is "two billion, seven hundred forty-nine million, four hundred two thousand, six hundred fifty-six".