3858140 has 96 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 1209600.

The previous prime is 3858103. The next prime is 3858143. The reversal of 3858140 is 418583.

3858140 = T₁ + T₂ + ... + T₂₈₄.

3858140 is a nontrivial binomial coefficient, being equal to C(286, 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858143) by changing a digit.

It is the 284-th tetrahedral number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54305 + ... + 54375.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

Almost surely, 2^3858140 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 3858140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5080320).

3858140 is an abundant number, since it is smaller than the sum of its proper divisors (6302500).

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

3858140 is a wasteful number, since it uses less digits than its factorization.

3858140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 3858140 is about 1964.2148558648. The cubic root of 3858140 is about 156.8409006693.

The spelling of 3858140 in words is "three million, eight hundred fifty-eight thousand, one hundred forty".