2118744 has 64 divisors (see below), whose sum is σ = 6242400. Its totient is φ = 663552.

The previous prime is 2118733. The next prime is 2118751. The reversal of 2118744 is 4478112.

It is a super-2 number, since 2×2118744² = 8978152275072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 3384 + ... + 3960.

2^2118744 is an apocalyptic number.

2118744 is a gapful number since it is divisible by the number (24) 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 2118744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3121200).

2118744 is an abundant number, since it is smaller than the sum of its proper divisors (4123656).

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

2118744 is a wasteful number, since it uses less digits than its factorization.

2118744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 599 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 2118744 is about 1455.5906017833. The cubic root of 2118744 is about 128.4377913042.

The spelling of 2118744 in words is "two million, one hundred eighteen thousand, seven hundred forty-four".