3728920328 has 16 divisors (see below), whose sum is σ = 7990543680. Its totient is φ = 1598108688.

The previous prime is 3728920277. The next prime is 3728920331. The reversal of 3728920328 is 8230298273.

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, 33293876 + ... + 33293987.

It is an arithmetic number, because the mean of its divisors is an integer number (499408980).

Almost surely, 2^3728920328 is an apocalyptic number.

It is an amenable number.

3728920328 is an abundant number, since it is smaller than the sum of its proper divisors (4261623352).

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

3728920328 is a wasteful number, since it uses less digits than its factorization.

3728920328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66587876 (or 66587872 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 3728920328 is about 61064.8862113080. The cubic root of 3728920328 is about 1550.6996949210.

The spelling of 3728920328 in words is "three billion, seven hundred twenty-eight million, nine hundred twenty thousand, three hundred twenty-eight".