6113440 has 48 divisors (see below), whose sum is σ = 15210720. Its totient is φ = 2315520.

The previous prime is 6113407. The next prime is 6113453. The reversal of 6113440 is 443116.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035 + ... + 4045.

It is an arithmetic number, because the mean of its divisors is an integer number (316890).

Almost surely, 2^6113440 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 6113440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7605360).

6113440 is an abundant number, since it is smaller than the sum of its proper divisors (9097280).

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

6113440 is a wasteful number, since it uses less digits than its factorization.

6113440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2037 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 6113440 is about 2472.5371584670. The cubic root of 6113440 is about 182.8501066861.

Adding to 6113440 its reverse (443116), we get a palindrome (6556556).

It can be divided in two parts, 61 and 13440, that multiplied together give a triangular number (819840 = T₁₂₈₀).

The spelling of 6113440 in words is "six million, one hundred thirteen thousand, four hundred forty".