2236649220 has 384 divisors, whose sum is σ = 8100288000. Its totient is φ = 507617280.

The previous prime is 2236649209. The next prime is 2236649221. The reversal of 2236649220 is 229466322.

2236649220 is a `hidden beast` number, since 2 + 2 + 3 + 6 + 649 + 2 + 2 + 0 = 666.

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 (2236649221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5468376 + ... + 5468784.

It is an arithmetic number, because the mean of its divisors is an integer number (21094500).

Almost surely, 2^2236649220 is an apocalyptic number.

2236649220 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 2236649220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4050144000).

2236649220 is an abundant number, since it is smaller than the sum of its proper divisors (5863638780).

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

2236649220 is a wasteful number, since it uses less digits than its factorization.

2236649220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 2236649220 is about 47293.2259419888. The cubic root of 2236649220 is about 1307.7737804212.

The spelling of 2236649220 in words is "two billion, two hundred thirty-six million, six hundred forty-nine thousand, two hundred twenty".