2236688640 has 576 divisors, whose sum is σ = 8688798720. Its totient is φ = 549421056.

The previous prime is 2236688633. The next prime is 2236688689. The reversal of 2236688640 is 468866322.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47589097 + ... + 47589143.

It is an arithmetic number, because the mean of its divisors is an integer number (15084720).

Almost surely, 2^2236688640 is an apocalyptic number.

2236688640 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 2236688640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4344399360).

2236688640 is an abundant number, since it is smaller than the sum of its proper divisors (6452110080).

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

2236688640 is an frugal number, since it uses more digits than its factorization.

2236688640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 2236688640 is about 47293.6427017416. The cubic root of 2236688640 is about 1307.7814633633.

The spelling of 2236688640 in words is "two billion, two hundred thirty-six million, six hundred eighty-eight thousand, six hundred forty".