3231620 has 48 divisors (see below), whose sum is σ = 7959168. Its totient is φ = 1079040.

The previous prime is 3231619. The next prime is 3231643. The reversal of 3231620 is 261323.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5459 + ... + 6021.

It is an arithmetic number, because the mean of its divisors is an integer number (165816).

Almost surely, 2^3231620 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 3231620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3979584).

3231620 is an abundant number, since it is smaller than the sum of its proper divisors (4727548).

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

3231620 is a wasteful number, since it uses less digits than its factorization.

3231620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3231620 is about 1797.6707151200. The cubic root of 3231620 is about 147.8450411231.

Adding to 3231620 its reverse (261323), we get a palindrome (3492943).

The spelling of 3231620 in words is "three million, two hundred thirty-one thousand, six hundred twenty".