2986779840 has 224 divisors, whose sum is σ = 10440838656. Its totient is φ = 717373440.

The previous prime is 2986779821. The next prime is 2986779853. The reversal of 2986779840 is 489776892.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1192029 + ... + 1194531.

Almost surely, 2^2986779840 is an apocalyptic number.

2986779840 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 2986779840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5220419328).

2986779840 is an abundant number, since it is smaller than the sum of its proper divisors (7454058816).

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

2986779840 is a wasteful number, since it uses less digits than its factorization.

2986779840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The square root of 2986779840 is about 54651.4395052866. The cubic root of 2986779840 is about 1440.1279207347.

The spelling of 2986779840 in words is "two billion, nine hundred eighty-six million, seven hundred seventy-nine thousand, eight hundred forty".