3888661280 has 96 divisors (see below), whose sum is σ = 10528237440. Its totient is φ = 1329592320.

The previous prime is 3888661241. The next prime is 3888661333. The reversal of 3888661280 is 821668883.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 419900 + ... + 429060.

It is an arithmetic number, because the mean of its divisors is an integer number (109669140).

Almost surely, 2^3888661280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3888661280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5264118720).

3888661280 is an abundant number, since it is smaller than the sum of its proper divisors (6639576160).

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

3888661280 is a wasteful number, since it uses less digits than its factorization.

3888661280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9562 (or 9554 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 3888661280 is about 62359.1314884997. The cubic root of 3888661280 is about 1572.5339798188.

It can be divided in two parts, 388 and 8661280, that added together give a palindrome (8661668).

The spelling of 3888661280 in words is "three billion, eight hundred eighty-eight million, six hundred sixty-one thousand, two hundred eighty".