3828221680 has 20 divisors (see below), whose sum is σ = 8900615592. Its totient is φ = 1531288640.

The previous prime is 3828221659. The next prime is 3828221723. The reversal of 3828221680 is 861228283.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23926306 + ... + 23926465.

Almost surely, 2^3828221680 is an apocalyptic number.

It is an amenable number.

3828221680 is an abundant number, since it is smaller than the sum of its proper divisors (5072393912).

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

3828221680 is a wasteful number, since it uses less digits than its factorization.

3828221680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47852784 (or 47852778 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 3828221680 is about 61872.6246412741. The cubic root of 3828221680 is about 1564.3443554653.

The spelling of 3828221680 in words is "three billion, eight hundred twenty-eight million, two hundred twenty-one thousand, six hundred eighty".