3649204728 has 96 divisors (see below), whose sum is σ = 10657286640. Its totient is φ = 1121379840.

The previous prime is 3649204723. The next prime is 3649204777. The reversal of 3649204728 is 8274029463.

3649204728 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649204723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 889963 + ... + 894053.

Almost surely, 2^3649204728 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 3649204728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5328643320).

3649204728 is an abundant number, since it is smaller than the sum of its proper divisors (7008081912).

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

3649204728 is a wasteful number, since it uses less digits than its factorization.

3649204728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069 (or 5062 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 3649204728 is about 60408.6477915207. The cubic root of 3649204728 is about 1539.5698928172.

The spelling of 3649204728 in words is "three billion, six hundred forty-nine million, two hundred four thousand, seven hundred twenty-eight".