2784244680 has 144 divisors (see below), whose sum is σ = 10526216220. Its totient is φ = 636394752.

The previous prime is 2784244669. The next prime is 2784244681. The reversal of 2784244680 is 864424872.

2784244680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2681789796 + 102454884 = 51786^2 + 10122^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2784244681) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 61279 + ... + 96558.

Almost surely, 2^2784244680 is an apocalyptic number.

2784244680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2784244680 is an abundant number, since it is smaller than the sum of its proper divisors (7741971540).

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

2784244680 is a wasteful number, since it uses less digits than its factorization.

2784244680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157868 (or 157854 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The square root of 2784244680 is about 52765.9424250150. The cubic root of 2784244680 is about 1406.8111426918.

The spelling of 2784244680 in words is "two billion, seven hundred eighty-four million, two hundred forty-four thousand, six hundred eighty".