2784691968 has 72 divisors (see below), whose sum is σ = 7532965776. Its totient is φ = 912998400.

The previous prime is 2784691967. The next prime is 2784691981. The reversal of 2784691968 is 8691964872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2784691961) 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, 17128 + ... + 76568.

Almost surely, 2^2784691968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2784691968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3766482888).

2784691968 is an abundant number, since it is smaller than the sum of its proper divisors (4748273808).

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

2784691968 is an equidigital number, since it uses as much as digits as its factorization.

2784691968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59521 (or 59507 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 60.

The square root of 2784691968 is about 52770.1806705264. The cubic root of 2784691968 is about 1406.8864732418.

The spelling of 2784691968 in words is "two billion, seven hundred eighty-four million, six hundred ninety-one thousand, nine hundred sixty-eight".