3928356380 has 96 divisors (see below), whose sum is σ = 9007595520. Its totient is φ = 1430472960.

The previous prime is 3928356361. The next prime is 3928356391. The reversal of 3928356380 is 836538293.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8948201 + ... + 8948639.

It is an arithmetic number, because the mean of its divisors is an integer number (93829120).

Almost surely, 2^3928356380 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 3928356380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4503797760).

3928356380 is an abundant number, since it is smaller than the sum of its proper divisors (5079239140).

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

3928356380 is a wasteful number, since it uses less digits than its factorization.

3928356380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 3928356380 is about 62676.6015351822. The cubic root of 3928356380 is about 1577.8666368691.

The spelling of 3928356380 in words is "three billion, nine hundred twenty-eight million, three hundred fifty-six thousand, three hundred eighty".