3213028 has 54 divisors (see below), whose sum is σ = 7155666. Its totient is φ = 1257984.

The previous prime is 3213011. The next prime is 3213029. The reversal of 3213028 is 8203123.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1764 + 3211264 = 42^2 + 1792^2 .

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3212996 and 3213014.

It is not an unprimeable number, because it can be changed into a prime (3213029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33076 + ... + 33172.

Almost surely, 2^3213028 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 3213028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3577833).

3213028 is an abundant number, since it is smaller than the sum of its proper divisors (3942638).

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

3213028 is a wasteful number, since it uses less digits than its factorization.

3213028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3213028 is about 1792.4921199269. The cubic root of 3213028 is about 147.5609706761.

The spelling of 3213028 in words is "three million, two hundred thirteen thousand, twenty-eight".