2118828240 has 160 divisors (see below), whose sum is σ = 7334352000. Its totient is φ = 562222080.

The previous prime is 2118828193. The next prime is 2118828293. The reversal of 2118828240 is 428288112.

It is a super-2 number, since 2×2118828240² = 8978866221242995200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2118828195 and 2118828204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453436 + ... + 458084.

It is an arithmetic number, because the mean of its divisors is an integer number (45839700).

Almost surely, 2^2118828240 is an apocalyptic number.

2118828240 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 2118828240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3667176000).

2118828240 is an abundant number, since it is smaller than the sum of its proper divisors (5215523760).

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

2118828240 is a wasteful number, since it uses less digits than its factorization.

2118828240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882 (or 4870 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 2118828240 is about 46030.7314736579. The cubic root of 2118828240 is about 1284.3949348496.

The spelling of 2118828240 in words is "two billion, one hundred eighteen million, eight hundred twenty-eight thousand, two hundred forty".