6391252 has 48 divisors (see below), whose sum is σ = 14031360. Its totient is φ = 2483712.

The previous prime is 6391247. The next prime is 6391261. The reversal of 6391252 is 2521936.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 6391252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13573 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (292320).

Almost surely, 2^6391252 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 6391252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7015680).

6391252 is an abundant number, since it is smaller than the sum of its proper divisors (7640108).

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

6391252 is a wasteful number, since it uses less digits than its factorization.

6391252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 6391252 is about 2528.0925615966. The cubic root of 6391252 is about 185.5789218161.

It can be divided in two parts, 639 and 1252, that added together give a triangular number (1891 = T₆₁).

The spelling of 6391252 in words is "six million, three hundred ninety-one thousand, two hundred fifty-two".