2218247532 has 240 divisors, whose sum is σ = 6328025088. Its totient is φ = 676045440.

The previous prime is 2218247519. The next prime is 2218247539. The reversal of 2218247532 is 2357428122.

2218247532 is a `hidden beast` number, since 2 + 2 + 1 + 82 + 47 + 532 = 666.

It is a super-2 number, since 2×2218247532² = 9841244226448182048, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2218247539) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17466453 + ... + 17466579.

Almost surely, 2^2218247532 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 2218247532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3164012544).

2218247532 is an abundant number, since it is smaller than the sum of its proper divisors (4109777556).

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

2218247532 is a wasteful number, since it uses less digits than its factorization.

2218247532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 247 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 2218247532 is about 47098.2752550452. The cubic root of 2218247532 is about 1304.1773967636.

The spelling of 2218247532 in words is "two billion, two hundred eighteen million, two hundred forty-seven thousand, five hundred thirty-two".