2781872248 has 16 divisors (see below), whose sum is σ = 5522834880. Its totient is φ = 1309116288.

The previous prime is 2781872221. The next prime is 2781872273. The reversal of 2781872248 is 8422781872.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10227336 + ... + 10227607.

It is an arithmetic number, because the mean of its divisors is an integer number (345177180).

Almost surely, 2^2781872248 is an apocalyptic number.

It is an amenable number.

2781872248 is a deficient number, since it is larger than the sum of its proper divisors (2740962632).

2781872248 is a wasteful number, since it uses less digits than its factorization.

2781872248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20454966 (or 20454962 counting only the distinct ones).

The product of its digits is 802816, while the sum is 49.

The square root of 2781872248 is about 52743.4569212144. The cubic root of 2781872248 is about 1406.4114517432.

The spelling of 2781872248 in words is "two billion, seven hundred eighty-one million, eight hundred seventy-two thousand, two hundred forty-eight".