2821093880 has 64 divisors (see below), whose sum is σ = 6949450080. Its totient is φ = 1022156800.

The previous prime is 2821093861. The next prime is 2821093921. The reversal of 2821093880 is 883901282.

It is a happy number.

2821093880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 112232 + ... + 135048.

Almost surely, 2^2821093880 is an apocalyptic number.

2821093880 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 2821093880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3474725040).

2821093880 is an abundant number, since it is smaller than the sum of its proper divisors (4128356200).

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

2821093880 is a wasteful number, since it uses less digits than its factorization.

2821093880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23120 (or 23116 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 2821093880 is about 53113.9706668594. The cubic root of 2821093880 is about 1412.9902971215.

The spelling of 2821093880 in words is "two billion, eight hundred twenty-one million, ninety-three thousand, eight hundred eighty".