3215648 has 18 divisors (see below), whose sum is σ = 6350841. Its totient is φ = 1602752.

The previous prime is 3215629. The next prime is 3215651. The reversal of 3215648 is 8465123.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 2347024 + 868624 = 1532^2 + 932^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1268.

It is a super-3 number, since 3×3215648³ = 99753183139938533376, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3215648.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9986 + ... + 10302.

Almost surely, 2^3215648 is an apocalyptic number.

It is an amenable number.

3215648 is a deficient number, since it is larger than the sum of its proper divisors (3135193).

3215648 is an frugal number, since it uses more digits than its factorization.

3215648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 319 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 3215648 is about 1793.2227970891. Note that the first 3 decimals coincide. The cubic root of 3215648 is about 147.6010683354.

The spelling of 3215648 in words is "three million, two hundred fifteen thousand, six hundred forty-eight".