2780742160 has 200 divisors, whose sum is σ = 7802286336. Its totient is φ = 920666880.

The previous prime is 2780742079. The next prime is 2780742247. The reversal of 2780742160 is 612470872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5954247 + ... + 5954713.

Almost surely, 2^2780742160 is an apocalyptic number.

2780742160 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 2780742160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3901143168).

2780742160 is an abundant number, since it is smaller than the sum of its proper divisors (5021544176).

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

2780742160 is an equidigital number, since it uses as much as digits as its factorization.

2780742160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 2780742160 is about 52732.7427695545. The cubic root of 2780742160 is about 1406.2209824202.

The spelling of 2780742160 in words is "two billion, seven hundred eighty million, seven hundred forty-two thousand, one hundred sixty".