2661888 has 40 divisors (see below), whose sum is σ = 7095528. Its totient is φ = 886784.

The previous prime is 2661871. The next prime is 2661899. The reversal of 2661888 is 8881662.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670 + ... + 2402.

2^2661888 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 2661888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3547764).

2661888 is an abundant number, since it is smaller than the sum of its proper divisors (4433640).

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

2661888 is an equidigital number, since it uses as much as digits as its factorization.

2661888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754 (or 1738 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 2661888 is about 1631.5293438979. The cubic root of 2661888 is about 138.5893717813.

The spelling of 2661888 in words is "two million, six hundred sixty-one thousand, eight hundred eighty-eight".