2785117120 has 28 divisors (see below), whose sum is σ = 6632060904. Its totient is φ = 1114046720.

The previous prime is 2785117091. The next prime is 2785117121. The reversal of 2785117120 is 217115872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785117121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4351426 + ... + 4352065.

It is an arithmetic number, because the mean of its divisors is an integer number (236859318).

Almost surely, 2^2785117120 is an apocalyptic number.

2785117120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785117120 is an abundant number, since it is smaller than the sum of its proper divisors (3846943784).

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

2785117120 is an equidigital number, since it uses as much as digits as its factorization.

2785117120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703508 (or 8703498 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 2785117120 is about 52774.2088524309. The cubic root of 2785117120 is about 1406.9580682532.

The spelling of 2785117120 in words is "two billion, seven hundred eighty-five million, one hundred seventeen thousand, one hundred twenty".