2789563320 has 128 divisors (see below), whose sum is σ = 9845582400. Its totient is φ = 700121088.

The previous prime is 2789563319. The next prime is 2789563321. The reversal of 2789563320 is 233659872.

2789563320 is a `hidden beast` number, since 2 + 7 + 8 + 9 + 5 + 633 + 2 + 0 = 666.

2789563320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2789563319) and next prime (2789563321).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789563321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57609 + ... + 94328.

Almost surely, 2^2789563320 is an apocalyptic number.

2789563320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2789563320 is an abundant number, since it is smaller than the sum of its proper divisors (7056019080).

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

2789563320 is a wasteful number, since it uses less digits than its factorization.

2789563320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151974 (or 151964 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 2789563320 is about 52816.3167969899. The cubic root of 2789563320 is about 1407.7063660556.

The spelling of 2789563320 in words is "two billion, seven hundred eighty-nine million, five hundred sixty-three thousand, three hundred twenty".