3649824 has 144 divisors (see below), whose sum is σ = 11793600. Its totient is φ = 1064448.

The previous prime is 3649777. The next prime is 3649831. The reversal of 3649824 is 4289463.

It is a happy number.

3649824 is a `hidden beast` number, since 3 + 649 + 8 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125842 + ... + 125870.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

Almost surely, 2^3649824 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 3649824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5896800).

3649824 is an abundant number, since it is smaller than the sum of its proper divisors (8143776).

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

3649824 is a wasteful number, since it uses less digits than its factorization.

3649824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 76 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3649824 is about 1910.4512555938. The cubic root of 3649824 is about 153.9656976504.

The spelling of 3649824 in words is "three million, six hundred forty-nine thousand, eight hundred twenty-four".