2235721488 has 640 divisors, whose sum is σ = 8532787200. Its totient is φ = 485222400.

The previous prime is 2235721487. The next prime is 2235721531. The reversal of 2235721488 is 8841275322.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2235721487) 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, 28300233 + ... + 28300311.

It is an arithmetic number, because the mean of its divisors is an integer number (13332480).

Almost surely, 2^2235721488 is an apocalyptic number.

2235721488 is a gapful number since it is divisible by the number (28) 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 2235721488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4266393600).

2235721488 is an abundant number, since it is smaller than the sum of its proper divisors (6297065712).

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

2235721488 is a wasteful number, since it uses less digits than its factorization.

2235721488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 165 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 2235721488 is about 47283.4166278199. The cubic root of 2235721488 is about 1307.5929397599.

The spelling of 2235721488 in words is "two billion, two hundred thirty-five million, seven hundred twenty-one thousand, four hundred eighty-eight".