3453520 has 60 divisors (see below), whose sum is σ = 9350964. Its totient is φ = 1182720.

The previous prime is 3453479. The next prime is 3453551. The reversal of 3453520 is 253543.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 2547216 = 952^2 + 1596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3453491 and 3453500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3480 + ... + 4360.

Almost surely, 2^3453520 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 3453520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4675482).

3453520 is an abundant number, since it is smaller than the sum of its proper divisors (5897444).

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

3453520 is a wasteful number, since it uses less digits than its factorization.

3453520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 3453520 is about 1858.3648726771. The cubic root of 3453520 is about 151.1543529330.

The spelling of 3453520 in words is "three million, four hundred fifty-three thousand, five hundred twenty".