2745051840 has 336 divisors, whose sum is σ = 10199217600. Its totient is φ = 675569664.

The previous prime is 2745051833. The next prime is 2745051851. The reversal of 2745051840 is 481505472.

2745051840 is a `hidden beast` number, since 2 + 74 + 505 + 1 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2745051795 and 2745051804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1920246 + ... + 1921674.

Almost surely, 2^2745051840 is an apocalyptic number.

2745051840 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 2745051840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5099608800).

2745051840 is an abundant number, since it is smaller than the sum of its proper divisors (7454165760).

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

2745051840 is a wasteful number, since it uses less digits than its factorization.

2745051840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 2745051840 is about 52393.2423123441. The cubic root of 2745051840 is about 1400.1788615017.

The spelling of 2745051840 in words is "two billion, seven hundred forty-five million, fifty-one thousand, eight hundred forty".