3205290 has 48 divisors (see below), whose sum is σ = 8465184. Its totient is φ = 776160.

The previous prime is 3205289. The next prime is 3205291. The reversal of 3205290 is 925023.

It is an interprime number because it is at equal distance from previous prime (3205289) and next prime (3205291).

It is not an unprimeable number, because it can be changed into a prime (3205291) 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, 3189 + ... + 4071.

It is an arithmetic number, because the mean of its divisors is an integer number (176358).

Almost surely, 2^3205290 is an apocalyptic number.

3205290 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 3205290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4232592).

3205290 is an abundant number, since it is smaller than the sum of its proper divisors (5259894).

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

3205290 is a wasteful number, since it uses less digits than its factorization.

3205290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 3205290 is about 1790.3323713769. The cubic root of 3205290 is about 147.4424174352.

The spelling of 3205290 in words is "three million, two hundred five thousand, two hundred ninety".