2780050028028 has 96 divisors (see below), whose sum is σ = 8199510111744. Its totient is φ = 713383780608.

The previous prime is 2780050028017. The next prime is 2780050028057. The reversal of 2780050028028 is 8208200500872.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34362750 + ... + 34443557.

It is an arithmetic number, because the mean of its divisors is an integer number (85411563664).

Almost surely, 2^{2780050028028} is an apocalyptic number.

2780050028028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2780050028028 is an abundant number, since it is smaller than the sum of its proper divisors (5419460083716).

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

2780050028028 is a wasteful number, since it uses less digits than its factorization.

2780050028028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806371 (or 68806369 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 2780050028028 in words is "two trillion, seven hundred eighty billion, fifty million, twenty-eight thousand, twenty-eight".