2786918420 has 96 divisors (see below), whose sum is σ = 7043694336. Its totient is φ = 912614400.

The previous prime is 2786918413. The next prime is 2786918429. The reversal of 2786918420 is 248196872.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2786918429) 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, 105377 + ... + 129143.

It is an arithmetic number, because the mean of its divisors is an integer number (73371816).

Almost surely, 2^2786918420 is an apocalyptic number.

2786918420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2786918420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3521847168).

2786918420 is an abundant number, since it is smaller than the sum of its proper divisors (4256775916).

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

2786918420 is a wasteful number, since it uses less digits than its factorization.

2786918420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23841 (or 23839 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 2786918420 is about 52791.2721953165. The cubic root of 2786918420 is about 1407.2613238895.

The spelling of 2786918420 in words is "two billion, seven hundred eighty-six million, nine hundred eighteen thousand, four hundred twenty".