2676781440 has 192 divisors, whose sum is σ = 9271126800. Its totient is φ = 711659520.

The previous prime is 2676781369. The next prime is 2676781493. The reversal of 2676781440 is 441876762.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3115731 + ... + 3116589.

Almost surely, 2^2676781440 is an apocalyptic number.

2676781440 is a gapful number since it is divisible by the number (20) 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 2676781440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4635563400).

2676781440 is an abundant number, since it is smaller than the sum of its proper divisors (6594345360).

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

2676781440 is a wasteful number, since it uses less digits than its factorization.

2676781440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 2676781440 is about 51737.6211281501. The cubic root of 2676781440 is about 1388.4736346163.

The spelling of 2676781440 in words is "two billion, six hundred seventy-six million, seven hundred eighty-one thousand, four hundred forty".