2621888 has 28 divisors (see below), whose sum is σ = 5285232. Its totient is φ = 1290240.

The previous prime is 2621881. The next prime is 2621897. The reversal of 2621888 is 8881262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4256 + ... + 4832.

2^2621888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2621888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2642616).

2621888 is an abundant number, since it is smaller than the sum of its proper divisors (2663344).

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

2621888 is an equidigital number, since it uses as much as digits as its factorization.

2621888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 650 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 2621888 is about 1619.2245057434. The cubic root of 2621888 is about 137.8916744244.

The spelling of 2621888 in words is "two million, six hundred twenty-one thousand, eight hundred eighty-eight".