3501828721 has 8 divisors (see below), whose sum is σ = 3535234560. Its totient is φ = 3468446352.

The previous prime is 3501828713. The next prime is 3501828749. The reversal of 3501828721 is 1278281053.

3501828721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3501828721 - 2³ = 3501828713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3501828751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489456 + ... + 496558.

It is an arithmetic number, because the mean of its divisors is an integer number (441904320).

Almost surely, 2^3501828721 is an apocalyptic number.

It is an amenable number.

3501828721 is a deficient number, since it is larger than the sum of its proper divisors (33405839).

3501828721 is a wasteful number, since it uses less digits than its factorization.

3501828721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11735.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 3501828721 is about 59176.2513260176. The cubic root of 3501828721 is about 1518.5588719929.

The spelling of 3501828721 in words is "three billion, five hundred one million, eight hundred twenty-eight thousand, seven hundred twenty-one".