3453320 has 64 divisors (see below), whose sum is σ = 8694000. Its totient is φ = 1225728.

The previous prime is 3453313. The next prime is 3453337. The reversal of 3453320 is 233543.

It can be written as a sum of positive squares in 8 ways, for example, as 1747684 + 1705636 = 1322^2 + 1306^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3453292 and 3453301.

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, 14966 + ... + 15194.

Almost surely, 2^3453320 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 3453320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4347000).

3453320 is an abundant number, since it is smaller than the sum of its proper divisors (5240680).

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

3453320 is a wasteful number, since it uses less digits than its factorization.

3453320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 3453320 is about 1858.3110611520. The cubic root of 3453320 is about 151.1514349967.

Adding to 3453320 its reverse (233543), we get a palindrome (3686863).

It can be divided in two parts, 3453 and 320, that added together give a palindrome (3773).

The spelling of 3453320 in words is "three million, four hundred fifty-three thousand, three hundred twenty".