3856832280 has 512 divisors, whose sum is σ = 15734476800. Its totient is φ = 821145600.

The previous prime is 3856832261. The next prime is 3856832311. The reversal of 3856832280 is 822386583.

3856832280 is a `hidden beast` number, since 3 + 8 + 568 + 3 + 2 + 2 + 80 = 666.

3856832280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7128810 + ... + 7129350.

It is an arithmetic number, because the mean of its divisors is an integer number (30731400).

Almost surely, 2^3856832280 is an apocalyptic number.

3856832280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3856832280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7867238400).

3856832280 is an abundant number, since it is smaller than the sum of its proper divisors (11877644520).

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

3856832280 is a wasteful number, since it uses less digits than its factorization.

3856832280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 3856832280 is about 62103.3999069294. The cubic root of 3856832280 is about 1568.2317821235.

The spelling of 3856832280 in words is "three billion, eight hundred fifty-six million, eight hundred thirty-two thousand, two hundred eighty".