3287921 has 8 divisors (see below), whose sum is σ = 4046784. Its totient is φ = 2601360.

The previous prime is 3287917. The next prime is 3287941. The reversal of 3287921 is 1297823.

3287921 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 3287921 - 2² = 3287917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3287941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17975 + ... + 18156.

It is an arithmetic number, because the mean of its divisors is an integer number (505848).

Almost surely, 2^3287921 is an apocalyptic number.

It is an amenable number.

3287921 is a deficient number, since it is larger than the sum of its proper divisors (758863).

3287921 is a wasteful number, since it uses less digits than its factorization.

3287921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36151.

The product of its digits is 6048, while the sum is 32.

The square root of 3287921 is about 1813.2625292549. The cubic root of 3287921 is about 148.6986838972.

The spelling of 3287921 in words is "three million, two hundred eighty-seven thousand, nine hundred twenty-one".