6213240 has 128 divisors (see below), whose sum is σ = 22636800. Its totient is φ = 1503360.

The previous prime is 6213239. The next prime is 6213253. The reversal of 6213240 is 423126.

It is a happy number.

6213240 is a `hidden beast` number, since 621 + 3 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11619 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (176850).

Almost surely, 2^6213240 is an apocalyptic number.

6213240 is a gapful number since it is divisible by the number (60) 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 6213240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11318400).

6213240 is an abundant number, since it is smaller than the sum of its proper divisors (16423560).

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

6213240 is a wasteful number, since it uses less digits than its factorization.

6213240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6213240 is about 2492.6371577107. The cubic root of 6213240 is about 183.8397312678.

Adding to 6213240 its reverse (423126), we get a palindrome (6636366).

The spelling of 6213240 in words is "six million, two hundred thirteen thousand, two hundred forty".