2118888 has 24 divisors (see below), whose sum is σ = 5738850. Its totient is φ = 706272.

The previous prime is 2118877. The next prime is 2118889. The reversal of 2118888 is 8888112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1340964 + 777924 = 1158^2 + 882^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

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

It is not an unprimeable number, because it can be changed into a prime (2118889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14643 + ... + 14786.

2^2118888 is an apocalyptic number.

It is an amenable number.

2118888 is an abundant number, since it is smaller than the sum of its proper divisors (3619962).

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

2118888 is a wasteful number, since it uses less digits than its factorization.

2118888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29441 (or 29434 counting only the distinct ones).

The product of its digits is 8192, while the sum is 36.

The square root of 2118888 is about 1455.6400654008. The cubic root of 2118888 is about 128.4407009876.

The spelling of 2118888 in words is "two million, one hundred eighteen thousand, eight hundred eighty-eight".