3988745256 has 32 divisors (see below), whose sum is σ = 9979748640. Its totient is φ = 1328530368.

The previous prime is 3988745239. The next prime is 3988745323. The reversal of 3988745256 is 6525478893.

It is a junction number, because it is equal to n+sod(n) for n = 3988745196 and 3988745205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34426 + ... + 95721.

It is an arithmetic number, because the mean of its divisors is an integer number (311867145).

Almost surely, 2^3988745256 is an apocalyptic number.

It is an amenable number.

3988745256 is an abundant number, since it is smaller than the sum of its proper divisors (5991003384).

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

3988745256 is a wasteful number, since it uses less digits than its factorization.

3988745256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131433 (or 131429 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The square root of 3988745256 is about 63156.5139633276. The cubic root of 3988745256 is about 1585.9108373890.

The spelling of 3988745256 in words is "three billion, nine hundred eighty-eight million, seven hundred forty-five thousand, two hundred fifty-six".