2878225644 has 48 divisors (see below), whose sum is σ = 7772441600. Its totient is φ = 811938816.

The previous prime is 2878225639. The next prime is 2878225687. The reversal of 2878225644 is 4465228782.

It is a junction number, because it is equal to n+sod(n) for n = 2878225593 and 2878225602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210229 + ... + 223500.

Almost surely, 2^2878225644 is an apocalyptic number.

It is an amenable number.

2878225644 is an abundant number, since it is smaller than the sum of its proper divisors (4894215956).

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

2878225644 is a wasteful number, since it uses less digits than its factorization.

2878225644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433822 (or 433820 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 48.

The square root of 2878225644 is about 53649.0973269821. The cubic root of 2878225644 is about 1422.4650768182.

The spelling of 2878225644 in words is "two billion, eight hundred seventy-eight million, two hundred twenty-five thousand, six hundred forty-four".