3891258 has 48 divisors (see below), whose sum is σ = 9771840. Its totient is φ = 1096128.

The previous prime is 3891247. The next prime is 3891259. The reversal of 3891258 is 8521983.

3891258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11041 + ... + 11387.

It is an arithmetic number, because the mean of its divisors is an integer number (203580).

Almost surely, 2^3891258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3891258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4885920).

3891258 is an abundant number, since it is smaller than the sum of its proper divisors (5880582).

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

3891258 is a wasteful number, since it uses less digits than its factorization.

3891258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 3891258 is about 1972.6271822116. The cubic root of 3891258 is about 157.2883930745.

The spelling of 3891258 in words is "three million, eight hundred ninety-one thousand, two hundred fifty-eight".