2878721604 has 72 divisors (see below), whose sum is σ = 7956163488. Its totient is φ = 870376320.

The previous prime is 2878721603. The next prime is 2878721609. The reversal of 2878721604 is 4061278782.

2878721604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2878721604.

It is not an unprimeable number, because it can be changed into a prime (2878721603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173019 + ... + 188925.

Almost surely, 2^2878721604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2878721604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3978081744).

2878721604 is an abundant number, since it is smaller than the sum of its proper divisors (5077441884).

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

2878721604 is a wasteful number, since it uses less digits than its factorization.

2878721604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16385 (or 16380 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 2878721604 is about 53653.7193864507. The cubic root of 2878721604 is about 1422.5467759098.

The spelling of 2878721604 in words is "two billion, eight hundred seventy-eight million, seven hundred twenty-one thousand, six hundred four".