2218126040 has 64 divisors (see below), whose sum is σ = 5404613760. Its totient is φ = 814440960.

The previous prime is 2218126039. The next prime is 2218126067. The reversal of 2218126040 is 406218122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82337 + ... + 105903.

It is an arithmetic number, because the mean of its divisors is an integer number (84447090).

Almost surely, 2^2218126040 is an apocalyptic number.

2218126040 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 2218126040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702306880).

2218126040 is an abundant number, since it is smaller than the sum of its proper divisors (3186487720).

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

2218126040 is a wasteful number, since it uses less digits than its factorization.

2218126040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23772 (or 23768 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2218126040 is about 47096.9854661633. The cubic root of 2218126040 is about 1304.1535866746.

The spelling of 2218126040 in words is "two billion, two hundred eighteen million, one hundred twenty-six thousand, forty".