3280290 has 48 divisors (see below), whose sum is σ = 8538048. Its totient is φ = 806208.

The previous prime is 3280289. The next prime is 3280297. The reversal of 3280290 is 920823.

3280290 = T₁₀ + T₁₁ + ... + T₂₆₉.

3280290 = 106² + 107² + ... + 222².

It is a self number, because there is not a number n which added to its sum of digits gives 3280290.

It is not an unprimeable number, because it can be changed into a prime (3280297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4747 + ... + 5393.

It is an arithmetic number, because the mean of its divisors is an integer number (177876).

Almost surely, 2^3280290 is an apocalyptic number.

3280290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3280290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4269024).

3280290 is an abundant number, since it is smaller than the sum of its proper divisors (5257758).

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

3280290 is a wasteful number, since it uses less digits than its factorization.

3280290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 3280290 is about 1811.1570887143. The cubic root of 3280290 is about 148.5835555577.

It can be divided in two parts, 3280 and 290, that added together give a triangular number (3570 = T₈₄).

The spelling of 3280290 in words is "three million, two hundred eighty thousand, two hundred ninety".