2755788728 has 128 divisors (see below), whose sum is σ = 6816268800. Its totient is φ = 1011916800.

The previous prime is 2755788667. The next prime is 2755788733. The reversal of 2755788728 is 8278875572.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2820176 + ... + 2821152.

It is an arithmetic number, because the mean of its divisors is an integer number (53252100).

Almost surely, 2^2755788728 is an apocalyptic number.

2755788728 is a gapful number since it is divisible by the number (28) 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 2755788728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3408134400).

2755788728 is an abundant number, since it is smaller than the sum of its proper divisors (4060480072).

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

2755788728 is a wasteful number, since it uses less digits than its factorization.

2755788728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1257 counting only the distinct ones).

The product of its digits is 17561600, while the sum is 59.

The square root of 2755788728 is about 52495.6067495176. The cubic root of 2755788728 is about 1402.0020214283.

It can be divided in two parts, 27 and 55788728, that added together give a palindrome (55788755).

The spelling of 2755788728 in words is "two billion, seven hundred fifty-five million, seven hundred eighty-eight thousand, seven hundred twenty-eight".