3856280 has 64 divisors (see below), whose sum is σ = 9447840. Its totient is φ = 1411072.

The previous prime is 3856273. The next prime is 3856289. The reversal of 3856280 is 826583.

3856280 = T₂₁₅ + T₂₁₆ + ... + T₃₂₀.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856289) by changing a digit.

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, 35987 + ... + 36093.

Almost surely, 2^3856280 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 3856280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4723920).

3856280 is an abundant number, since it is smaller than the sum of its proper divisors (5591560).

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

3856280 is a wasteful number, since it uses less digits than its factorization.

3856280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 3856280 is about 1963.7413271610. The cubic root of 3856280 is about 156.8156924111.

The spelling of 3856280 in words is "three million, eight hundred fifty-six thousand, two hundred eighty".