2786673780 has 240 divisors, whose sum is σ = 9585221184. Its totient is φ = 672122880.

The previous prime is 2786673727. The next prime is 2786673787. The reversal of 2786673780 is 873766872.

It is a super-2 number, since 2×2786673780² = 15531101512278976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2786673787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6290239 + ... + 6290681.

Almost surely, 2^2786673780 is an apocalyptic number.

2786673780 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 2786673780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4792610592).

2786673780 is an abundant number, since it is smaller than the sum of its proper divisors (6798547404).

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

2786673780 is a wasteful number, since it uses less digits than its factorization.

2786673780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The square root of 2786673780 is about 52788.9550947923. The cubic root of 2786673780 is about 1407.2201454942.

The spelling of 2786673780 in words is "two billion, seven hundred eighty-six million, six hundred seventy-three thousand, seven hundred eighty".