2878818840 has 128 divisors (see below), whose sum is σ = 9611712000. Its totient is φ = 766433664.

The previous prime is 2878818827. The next prime is 2878818841. The reversal of 2878818840 is 488188782.

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 (2878818841) 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, 796317 + ... + 799923.

It is an arithmetic number, because the mean of its divisors is an integer number (75091500).

Almost surely, 2^2878818840 is an apocalyptic number.

2878818840 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 2878818840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4805856000).

2878818840 is an abundant number, since it is smaller than the sum of its proper divisors (6732893160).

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

2878818840 is a wasteful number, since it uses less digits than its factorization.

2878818840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 1835008, while the sum is 54.

The square root of 2878818840 is about 53654.6255228755. The cubic root of 2878818840 is about 1422.5627924176.

The spelling of 2878818840 in words is "two billion, eight hundred seventy-eight million, eight hundred eighteen thousand, eight hundred forty".