2878912500 has 72 divisors (see below), whose sum is σ = 8396400096. Its totient is φ = 767700000.

The previous prime is 2878912489. The next prime is 2878912511. The reversal of 2878912500 is 52198782.

It is an interprime number because it is at equal distance from previous prime (2878912489) and next prime (2878912511).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 886 + ... + 75885.

It is an arithmetic number, because the mean of its divisors is an integer number (116616668).

Almost surely, 2^2878912500 is an apocalyptic number.

2878912500 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 2878912500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4198200048).

2878912500 is an abundant number, since it is smaller than the sum of its proper divisors (5517487596).

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

2878912500 is an equidigital number, since it uses as much as digits as its factorization.

2878912500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76803 (or 76781 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 2878912500 is about 53655.4983203026. The cubic root of 2878912500 is about 1422.5782195533.

The spelling of 2878912500 in words is "two billion, eight hundred seventy-eight million, nine hundred twelve thousand, five hundred".