3720781248 has 112 divisors (see below), whose sum is σ = 10383438720. Its totient is φ = 1172634624.

The previous prime is 3720781247. The next prime is 3720781303. The reversal of 3720781248 is 8421870273.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720781243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3198715 + ... + 3199877.

Almost surely, 2^3720781248 is an apocalyptic number.

3720781248 is a gapful number since it is divisible by the number (38) 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 3720781248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5191719360).

3720781248 is an abundant number, since it is smaller than the sum of its proper divisors (6662657472).

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

3720781248 is a wasteful number, since it uses less digits than its factorization.

3720781248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 3720781248 is about 60998.2069244662. The cubic root of 3720781248 is about 1549.5706404236.

The spelling of 3720781248 in words is "three billion, seven hundred twenty million, seven hundred eighty-one thousand, two hundred forty-eight".