4331087720 has 32 divisors (see below), whose sum is σ = 9747020520. Its totient is φ = 1732066560.

The previous prime is 4331087707. The next prime is 4331087729. The reversal of 4331087720 is 277801334.

It is a Cunningham number, because it is equal to 65811²-1.

It can be written as a sum of positive squares in 4 ways, for example, as 3824927716 + 506160004 = 61846^2 + 22498^2 .

It is not an unprimeable number, because it can be changed into a prime (4331087729) 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 7 ways as a sum of consecutive naturals, for example, 255014 + ... + 271466.

Almost surely, 2^4331087720 is an apocalyptic number.

4331087720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4331087720 is an abundant number, since it is smaller than the sum of its proper divisors (5415932800).

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

4331087720 is a wasteful number, since it uses less digits than its factorization.

4331087720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23045 (or 23041 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 4331087720 is about 65810.9999924025. Note that the first 5 decimals coincide. The cubic root of 4331087720 is about 1630.0427454383.

The spelling of 4331087720 in words is "four billion, three hundred thirty-one million, eighty-seven thousand, seven hundred twenty".