2881422720 has 640 divisors, whose sum is σ = 11658746880. Its totient is φ = 671846400.

The previous prime is 2881422697. The next prime is 2881422787. The reversal of 2881422720 is 272241882.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17677359 + ... + 17677521.

It is an arithmetic number, because the mean of its divisors is an integer number (18216792).

Almost surely, 2^2881422720 is an apocalyptic number.

2881422720 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 2881422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5829373440).

2881422720 is an abundant number, since it is smaller than the sum of its proper divisors (8777324160).

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

2881422720 is a wasteful number, since it uses less digits than its factorization.

2881422720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 2881422720 is about 53678.8852343265. The cubic root of 2881422720 is about 1422.9915639340.

The spelling of 2881422720 in words is "two billion, eight hundred eighty-one million, four hundred twenty-two thousand, seven hundred twenty".