2887783920 has 640 divisors, whose sum is σ = 12044943360. Its totient is φ = 622080000.

The previous prime is 2887783919. The next prime is 2887783949. The reversal of 2887783920 is 293877882.

It is a super-2 number, since 2×2887783920² = 16678591937221132800, 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 an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28591870 + ... + 28591970.

It is an arithmetic number, because the mean of its divisors is an integer number (18820224).

Almost surely, 2^2887783920 is an apocalyptic number.

2887783920 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 2887783920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6022471680).

2887783920 is an abundant number, since it is smaller than the sum of its proper divisors (9157159440).

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

2887783920 is a wasteful number, since it uses less digits than its factorization.

2887783920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 2887783920 is about 53738.1049163440. The cubic root of 2887783920 is about 1424.0379545285.

The spelling of 2887783920 in words is "two billion, eight hundred eighty-seven million, seven hundred eighty-three thousand, nine hundred twenty".