2778732760 has 32 divisors (see below), whose sum is σ = 6370118640. Its totient is φ = 1090520704.

The previous prime is 2778732743. The next prime is 2778732763. The reversal of 2778732760 is 672378772.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778732763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653242 + ... + 657481.

Almost surely, 2^2778732760 is an apocalyptic number.

2778732760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2778732760 is an abundant number, since it is smaller than the sum of its proper divisors (3591385880).

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

2778732760 is a wasteful number, since it uses less digits than its factorization.

2778732760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310787 (or 1310783 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 49.

The square root of 2778732760 is about 52713.6866477768. The cubic root of 2778732760 is about 1405.8821830191.

The spelling of 2778732760 in words is "two billion, seven hundred seventy-eight million, seven hundred thirty-two thousand, seven hundred sixty".