2808942948 has 144 divisors (see below), whose sum is σ = 8449983360. Its totient is φ = 799248384.

The previous prime is 2808942943. The next prime is 2808942991. The reversal of 2808942948 is 8492498082.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2808942894 and 2808942903.

It is not an unprimeable number, because it can be changed into a prime (2808942943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1992868 + ... + 1994276.

It is an arithmetic number, because the mean of its divisors is an integer number (58680440).

Almost surely, 2^2808942948 is an apocalyptic number.

2808942948 is a gapful number since it is divisible by the number (28) 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 2808942948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4224991680).

2808942948 is an abundant number, since it is smaller than the sum of its proper divisors (5641040412).

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

2808942948 is a wasteful number, since it uses less digits than its factorization.

2808942948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 2808942948 is about 52999.4617708520. The cubic root of 2808942948 is about 1410.9587142140.

The spelling of 2808942948 in words is "two billion, eight hundred eight million, nine hundred forty-two thousand, nine hundred forty-eight".