2221652736 has 54 divisors (see below), whose sum is σ = 6405579180. Its totient is φ = 740550144.

The previous prime is 2221652723. The next prime is 2221652737. The reversal of 2221652736 is 6372561222.

2221652736 is a `hidden beast` number, since 222 + 165 + 273 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2221652736.

It is not an unprimeable number, because it can be changed into a prime (2221652737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 479826 + ... + 484433.

Almost surely, 2^2221652736 is an apocalyptic number.

It is an amenable number.

2221652736 is an abundant number, since it is smaller than the sum of its proper divisors (4183926444).

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

2221652736 is an equidigital number, since it uses as much as digits as its factorization.

2221652736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964281 (or 964264 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2221652736 is about 47134.4113785247. The cubic root of 2221652736 is about 1304.8443977067.

The spelling of 2221652736 in words is "two billion, two hundred twenty-one million, six hundred fifty-two thousand, seven hundred thirty-six".