6449436 has 96 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 1741824.

The previous prime is 6449431. The next prime is 6449437. The reversal of 6449436 is 6349446.

6449436 is a `hidden beast` number, since 644 + 9 + 4 + 3 + 6 = 666.

6449436 is a nontrivial binomial coefficient, being equal to C(3592, 2).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6449436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14140 + ... + 14588.

It is an arithmetic number, because the mean of its divisors is an integer number (210000).

Almost surely, 2^6449436 is an apocalyptic number.

6449436 is the 3591-st triangular number and also the 1796-th hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6449436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10080000).

6449436 is an abundant number, since it is smaller than the sum of its proper divisors (13710564).

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

6449436 is a wasteful number, since it uses less digits than its factorization.

6449436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 480 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6449436 is about 2539.5739800211. The cubic root of 6449436 is about 186.1403727033.

The spelling of 6449436 in words is "six million, four hundred forty-nine thousand, four hundred thirty-six".