3213928 has 16 divisors (see below), whose sum is σ = 6288480. Its totient is φ = 1537008.

The previous prime is 3213893. The next prime is 3213937. The reversal of 3213928 is 8293123.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3213896 and 3213905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8550 + ... + 8917.

It is an arithmetic number, because the mean of its divisors is an integer number (393030).

Almost surely, 2^3213928 is an apocalyptic number.

It is an amenable number.

3213928 is a deficient number, since it is larger than the sum of its proper divisors (3074552).

3213928 is a wasteful number, since it uses less digits than its factorization.

3213928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496 (or 17492 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 3213928 is about 1792.7431494779. The cubic root of 3213928 is about 147.5747471382.

The spelling of 3213928 in words is "three million, two hundred thirteen thousand, nine hundred twenty-eight".